background image

Integrated Device Technology, Inc.

FUNCTIONAL BLOCK DIAGRAM

1

Y

1

1

Y

2

1

Y

3

1

Y

4

1

A

1

1

A

2

1

A

3

1

A

4

2

OE

2

A

1

2

A

2

2

A

3

2

A

4

2

Y

1

2

Y

2

2

Y

3

2

Y

4

2544 drw 01

1

OE

3

OE

3

A

1

3

A

2

3

A

3

3

A

4

3

Y

1

3

Y

2

3

Y

3

3

Y

4

4

OE

4

A

1

4

A

2

4

A

3

4

A

4

4

Y

1

4

Y

2

4

Y

3

4

Y

4

2544 drw 02

The IDT logo is a registered trademark of Integrated Device Technology, Inc.

MILITARY AND COMMERCIAL TEMPERATURE RANGES

OCTOBER 1996

©

1996 Integrated Device Technology, Inc.

5.2

DSC-2544/9

15

FAST CMOS 16-BIT

BUFFER/LINE DRIVER

IDT54/74FCT16244T/AT/CT/ET

IDT54/74FCT162244T/AT/CT/ET

IDT54/74FCT166244T/AT/CT

IDT54/74FCT162H244T/AT/CT/ET

FEATURES:

• Common features:

0.5 MICRON CMOS Technology

High-speed, low-power CMOS replacement for

ABT functions

Typical t

SK

(o)  (Output Skew) < 250ps

Low input and output leakage 

 1

µ

A (max.)

ESD > 2000V per MIL-STD-883, Method 3015;

> 200V using machine model (C = 200pF, R = 0)

Packages include 25 mil pitch SSOP, 19.6 mil pitch

TSSOP, 15.7 mil pitch TVSOP and 25 mil pitch Cerpack

Extended commercial range of -40

°

C to +85

°

C

• Features for FCT16244T/AT/CT/ET:

High drive outputs (-32mA I

OH

, 64mA I

OL

)

Power off disable outputs permit “live insertion”

Typical V

OLP

 (Output Ground Bounce) < 1.0V at

V

CC

 = 5V, T

A

 = 25

°

C

• Features for FCT162244T/AT/CT/ET:

Balanced Output Drivers:

±

24mA (commercial),

±

16mA (military)

Reduced system switching noise

Typical V

OLP

 (Output Ground Bounce) < 0.6V at

V

CC

 = 5V,T

A

 = 25

°

C

• Features for FCT166244T/AT/CT:

Light Drive Balanced Output:  

±

8mA (commercial),

     

±

6mA (military)

Minimal system switching noise

Typical V

OLP

 (Output Ground Bounce) < 0.25V at

V

CC

 = 5V,T

A

 = 25

°

C

• Features for FCT162H244T/AT/CT/ET:

Bus-Hold retains last active bus state during 3-state

Eliminates the need for external pull up resistors

DESCRIPTION:

The 16-Bit Buffer/Line Driver is for bus interface or signal buffering

applications requiring high speed and low power dissipation.  These

devices have a flow through pin organization, and shrink packaging

to simplify  board layout.  All inputs are designed with hysteresis for

improved noise margin.  The three-state controls allow independent

4-bit, 8-bit or combined 16-bit operation.  These parts are plug in

replacements for 54/74ABT16244 where higher speed, lower noise

or lower power dissipation levels are desired.

The FCT16244T/AT/CT/ET are ideally suited for driving

high capacitance loads (>200pF) and low impedance

backplanes.  These "high drive" buffers are designed with

power off disable capability to allow "live insertion" of boards

when used in a backplane interface.

The FCT162244T/AT/CT/ET have balanced output current

levels and current limiting resistors.  These offer low ground

bounce, minimal undershoot, and controlled output fall times,

reducing the need for external series terminating resistors

while still providing very high speed operation for loads of less

than 200pF.

The FCT166244T/AT/CT are suited for very low noise,

point-to-point driving where there is a single receiver, or a very

light lumped load (<100pF).  The buffers are designed to limit

the output current to levels which will avoid noise and ringing

on the signal lines without using external series terminating

resistors.

The FCT162H244T/AT/CT/ET have "Bus-Hold" which re-

tains the input's last state whenever the input goes to high

impedance.  This prevents "floating" inputs and eliminates the

need for pull-up/down resistors.

background image

IDT54/74FCT16244T/AT/CT/ET, 162244T/AT/CT/ET,

166244T/AT/CT, 162H244T/AT/CT/ET FAST CMOS 16-BIT BUFFER/LINE DRIVER

MILITARY AND COMMERCIAL TEMPERATURE RANGES

5.2

2

PIN CONFIGURATIONS

1

Y

1

GND

1

Y

3

V

CC

1

OE

GND

3

Y

2

GND

V

CC

GND

1

Y

2

1

Y

4

2

Y

1

2

Y

2

2

Y

3

2

Y

4

3

Y

1

3

Y

3

3

Y

4

4

Y

1

4

Y

3

4

Y

4

4

Y

2

4

OE

1

A

1

1

A

2

GND

1

A

3

1

A

4

V

CC

2

A

1

2

A

2

2

A

3

2

A

4

3

A

1

3

A

2

3

A

3

3

A

4

V

CC

4

A

1

4

A

3

4

A

4

4

A

2

GND

GND

GND

2

OE

3

OE

39

29

30

31

32

33

34

35

36

37

38

25

26

27

28

48

47

41

42

43

44

45

46

40

1

2

3

4

5

6

7

8

9

10

12

13

14

15

16

17

18

19

20

11

21

22

23

24

2544 drw 04

CERPACK 

TOP VIEW

E48-1

PIN DESCRIPTION

2544 tbl 01

NOTE:

1. On FCT16xH these pins have “Bus-hold”.  All other pins are standard

inputs, outputs or I/Os.

Pin Names

Description

x

OE

3–State Output Enable Inputs (Active LOW)

xAx

Data Inputs

(1)

xYx

3-State Outputs  

1

Y

1

GND

1

Y

3

V

CC

GND

3

Y

2

GND

V

CC

GND

1

Y

2

1

Y

4

2

Y

1

2

Y

2

2

Y

3

2

Y

4

3

Y

1

3

Y

3

3

Y

4

4

Y

1

4

Y

3

4

Y

4

4

Y

2

4

OE

1

A

1

1

A

2

GND

1

A

3

1

A

4

V

CC

2

A

1

2

A

2

2

A

3

2

A

4

3

A

1

3

A

2

3

A

3

3

A

4

V

CC

4

A

1

4

A

3

4

A

4

4

A

2

GND

GND

GND

2

OE

3

OE

2544 drw 03

39

29

30

31

32

33

34

35

36

37

38

25

26

27

28

48

47

41

42

43

44

45

46

40

1

2

3

4

5

6

7

8

9

10

12

13

14

15

16

17

18

19

20

11

21

22

23

24

SSOP/

TSSOP/TVSOP

TOP VIEW

SO48-1

SO48-2

SO48-3

1

OE

background image

5.2

3

IDT54/74FCT16244T/AT/CT/ET, 162244T/AT/CT/ET,

166244T/AT/CT, 162H244T/AT/CT/ET FAST CMOS 16-BIT BUFFER/LINE DRIVER

MILITARY AND COMMERCIAL TEMPERATURE RANGES

NOTE:

1. This parameter is measured at characterization but not tested.

CAPACITANCE

 (T

A

 = +25

°

C, f = 1.0MHz)

FUNCTION TABLE

(1)

2544 lnk 04

NOTE:

1. H = HIGH Voltage Level

X = Don’t Care

L = LOW Voltage Level

Z = High Impedance

2544 tbl 02

Symbol

Parameter

(1)

Conditions

Typ.

Max.

Unit

C

IN

Input

Capacitance

V

IN

  = 0V

3.5

6.0

pF

C

OUT

Output

Capacitance

V

OUT 

= 0V

3.5

8.0

pF

ABSOLUTE MAXIMUM RATINGS

(1)

DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE (STANDARD PARTS)

Following Conditions Apply Unless Otherwise Specified:

Commercial: T

A

 = –40

°

C to +85

°

C, V

CC

 = 5.0V 

±

 10%; Military: T

A

 = –55

°

C to +125

°

C, V

CC

 

= 5.0V 

±

 10%

Inputs

Outputs

x

OE

OE

  

xAx

xYx

L

L

L

L

H

H

H

X

Z

Symbol

Parameter

Test Conditions

(1)

Min.

Typ.

(2)

Max.

Unit

V

IH

Input HIGH Level

Guaranteed Logic HIGH Level

2.0

V

V

IL

Input LOW Level

Guaranteed Logic LOW Level

0.8

V

I

I H

Input HIGH Current (Input pins)

(5)

V

CC

 = Max.

V

I

 = V

CC

±

1

µ

A

Input HIGH Current (I/O pins)

(5)

±

1

I

I L

Input LOW Current (Input pins)

(5)

  

V

I

 = GND

±

1

Input LOW Current (I/O pins)

(5)

±

1

I

OZH

High Impedance Output Current

V

CC

 = Max.

V

= 2.7V

±

1

µ

A

I

OZL

(3-State Output pins)

(5)

V

O

 = 0.5V

±

1

V

IK

Clamp Diode Voltage

V

CC

 = Min., I

IN  

= –18mA

0.7

1.2

V

I

OS

Short Circuit Current

V

CC

 = Max.,  V

= GND

(3)

–80

140

225

mA

V

H

Input Hysteresis

                                         —

100

mV

I

CCL

I

CCH

I

CCZ

Quiescent Power Supply Current

V

CC

 = Max., V

IN

 = GND or V

CC

5

500

µ

A

2544 lnk 05

NOTES:

1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.

2. Typical values are at Vcc = 5.0V, +25

°

C ambient.

3. Not more than one output should be tested at one time.   Duration of the test should not exceed one second.

4. Duration of the condition can not exceed one second.

5. The test limit for this parameter is 

±

 5

µ

A at T

A

 = –55

°

C.

Symbol

Description

Max.

Unit

V

TERM(2)

Terminal Voltage with Respect to

GND

–0.5 to +7.0

V

V

TERM(3)

Terminal Voltage with Respect to

GND

–0.5 to

V

CC 

+0.5

 

 

V

T

STG

Storage Temperature

–65 to +150

°

C

I

OUT

DC Output Current

–60 to +120    mA

NOTES:

1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS

may cause permanent damage to the device.  This is a stress rating only

and functional operation of the device at these or any other conditions

above those indicated in the operational sections of this specification is

not  implied.  Exposure to absolute maximum rating conditions for

extended periods may affect reliability.

2. All device terminals except FCT162XXXT and FCT166XXXT output and

I/O terminals.

3. Output and I/O terminals for FCT162XXXT and FCT166XXXT.

2544 lnk 03

background image

IDT54/74FCT16244T/AT/CT/ET, 162244T/AT/CT/ET,

166244T/AT/CT, 162H244T/AT/CT/ET FAST CMOS 16-BIT BUFFER/LINE DRIVER

MILITARY AND COMMERCIAL TEMPERATURE RANGES

5.2

4

DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE (BUS-HOLD)

Following Conditions Apply Unless Otherwise Specified:

Commercial: T

A

 = –40

°

C to +85

°

C, V

CC

 = 5.0V 

±

 10%; Military: T

A

 = –55

°

C to +125

°

C, V

CC

 

= 5.0V 

±

 10%

2544 lnk 06

Symbol

Parameter

Test Conditions

(1)

Min.

Typ.

(2)

Max.

Unit

V

IH

Input HIGH Level

Guaranteed Logic HIGH Level

2.0

V

V

IL

Input LOW Level

Guaranteed Logic LOW Level

0.8

V

I

I H

Input  

Standard Input

(5)

V

CC

 = Max.

V

I

 = V

CC

±

1

µ

A

HIGH  

Standard I/O

(5)

±

1

Current

(4)

Bus-hold Input

±

100

Bus-hold I/O

±

100

I

I L

Input

Standard Input

(5)

V

I

 = GND

±

1

LOW

Standard I/O

(5)

 

 

±

1

Current

(4)

Bus-hold Input

±

100

Bus-hold I/O

±

100

I

BHH

Bus Hold

Bus-hold Input

V

CC

 = Min.

V

I

 = 2.0V

–50

µ

A

I

BHL

Sustain

Current

(4)

  

V

I

 = 0.8V

+50

I

OZH

High Impedance Output Current

V

CC

 = Max.

V

= 2.7V

±

1

µ

A

I

OZL

(3-State Output pins)

(5,6)

V

O

 = 0.5V

±

1

V

IK

Clamp Diode Voltage

V

CC

 = Min., I

IN  

= –18mA

0.7

1.2

V

I

OS

Short Circuit Current

V

CC

 = Max.,  V

= GND

(3)

–80

140

225

mA

V

H

Input Hysteresis

                                         —

100

mV

I

CCL

I

CCH

I

CCZ

Quiescent Power Supply Current

V

CC

 = Max., V

IN

 = GND or V

CC

5

500

µ

A

NOTES:

1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.

2. Typical values are at Vcc = 5.0V, +25

°

C ambient.

3. Not more than one output should be tested at one time.   Duration of the test should not exceed one second.

4. Pins with Bus-hold are identified in the pin description.

5. The test limit for this parameter is 

±

 5

µ

A at T

A

 = –55

°

C.

6. Does not include Bus-hold I/O pins.

background image

5.2

5

IDT54/74FCT16244T/AT/CT/ET, 162244T/AT/CT/ET,

166244T/AT/CT, 162H244T/AT/CT/ET FAST CMOS 16-BIT BUFFER/LINE DRIVER

MILITARY AND COMMERCIAL TEMPERATURE RANGES

OUTPUT DRIVE CHARACTERISTICS FOR FCT16244T

Symbol

Parameter

Test Conditions

(1)

Min.

Typ.

(2)

Max.

 

Unit

I

O

Output Drive Current

V

CC

 = Max.,  V

= 2.5V

(3)

–50

180

mA

V

OH

Output HIGH Voltage

V

CC

 = Min.

I

OH

 = –3mA  

2.5

3.5

V

V

IN

 = V

IH 

or V

IL

I

OH

 = –12mA MIL.

I

OH

 = –15mA COM'L.

2.4

3.5

V

I

OH

 = –24mA MIL.

I

OH

 = –32mA COM'L.

(4)

2.0

3.0

V

V

OL

Output LOW Voltage

V

CC

 = Min.

V

IN

 = V

IH 

or V

IL

I

OL 

= 48mA MIL.

I

OL 

= 64mA COM'L.

0.2

0.55

V

I

OFF

Input/Output Power Off Leakage

(5)

V

CC

 = 0V, V

IN  

or V

O  

 4.5V

±

1

µ

A

OUTPUT DRIVE CHARACTERISTICS FOR FCT162244T

2544 lnk 07

2544 lnk 08

OUPUT DRIVE CHARACTERISTICS FOR FCT166244T

Symbol

Parameter

Test Conditions

(1)

Min.

Typ.

(2)

Max.

 

Unit

I

ODL

Output LOW Current

V

CC

 = 5V, V

IN 

= V

IH 

or

 

V

IL,  

V

OUT 

= 1.5V

(3)

16

48

96

mA

I

ODH

Output HIGH Current

V

CC

 = 5V, V

IN 

= V

IH 

or V

   IL,

V

OUT 

= 1.5V

(3)

–16

–48

–96

mA

V

OH

Output HIGH Voltage

V

CC

 = Min.

V

IN

 = V

IH 

or 

 

V

IL

I

OH

 = –6mA MIL.

I

OH

 = –8mA COM'L.

2.4

3.3

V

V

OL

Output LOW Voltage

V

CC

 = Min.

V

IN

 = V

IH 

or V

IL

I

OL

 = 6mA MIL.

I

OL

 = 8mA COM'L.

0.3

0.55

V

2544 lnk 09

NOTES:

1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.

2. Typical values are at Vcc = 5.0V, +25

°

C ambient.

3. Not more than one output should be tested at one time.   Duration of the test should not exceed one second.

4. Duration of the condition can not exceed one second.

5. The test limit for this parameter is 

±

 5

µ

A at T

A

 = –55

°

C.

Symbol

Parameter

Test Conditions

(1)

Min.

Typ.

(2)

Max.

 

Unit

I

ODL

Output LOW Current

V

CC

 = 5V, V

IN 

= V

IH 

or

 

V

IL,  

V

OUT 

= 1.5V

(3)

60

115

200

mA

I

ODH

Output HIGH Current

V

CC

 = 5V, V

IN 

= V

IH 

or V

   IL,  

V

OUT 

= 1.5V

(3)

–60

–115

–200

mA

V

OH

Output HIGH Voltage

V

CC

 = Min.

V

IN

 = V

IH 

or V

IL

I

OH

 = –16mA MIL.

I

OH

 = –24mA COM'L.

2.4

3.3

V

V

OL

Output LOW Voltage

V

CC

 = Min.

V

IN

 = V

IH 

or V

IL

I

OL

 = 16mA MIL.

I

OL

 = 24mA COM'L.

0.3

0.55

V

background image

IDT54/74FCT16244T/AT/CT/ET, 162244T/AT/CT/ET,

166244T/AT/CT, 162H244T/AT/CT/ET FAST CMOS 16-BIT BUFFER/LINE DRIVER

MILITARY AND COMMERCIAL TEMPERATURE RANGES

5.2

6

POWER SUPPLY CHARACTERISTICS

2544 tbl 10

NOTES:

1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.

2. Typical values are at V

CC 

= 5.0V, +25

°

C ambient.

3. Per TTL driven input  (V

IN 

= 3.4V).  All other inputs at V

CC 

or GND.

4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.

5. Values for these conditions are examples of the I

CC

 formula.   These limits are guaranteed but not tested.

6. I

C

 = I

QUIESCENT

 + I

INPUTS

 + I

DYNAMIC

I

C

 = I

CC

 + 

I

CC

 D

H

N

T

 + I

CCD 

 (f

CP

N

CP

/2 + f

i

N

i

)

I

CC

 = Quiescent Current (I

CCL

I

CCH

 

 

and  I

CCZ

)

I

CC

 = Power Supply Current for a TTL High Input  (V

IN

 = 3.4V)

D

H

 = Duty Cycle for TTL Inputs High

N

T

 = Number of TTL Inputs at D

H

I

CCD

 = Dynamic Current Caused by an Input Transition Pair (HLH or LHL)

f

CP

 = Clock Frequency  for Register Devices (Zero for Non-Register Devices)

N

CP

 = Number of Clock Inputs at f

CP

f

i

 = Input Frequency

N

i

 = Number of Inputs at f

i

Symbol

Parameter

Test Conditions

(1)

Min.

Typ.

(2)

Max.

Unit

I

CC

Quiescent Power Supply Current

TTL Inputs HIGH

V

CC

 = Max.

V

IN  

= 3.4V

(3)

0.5

1.5

mA

I

CCD

Dynamic Power Supply  

Current

(4)

V

CC

 = Max.

Outputs Open

x

OE

 = GND

One Input Toggling

50% Duty Cycle

V

IN

 = V

CC

  

V

IN

 = GND  

60

100

µ

A/

MHz

I

C

Total Power Supply Current

(6)

V

CC

 = Max.

Outputs Open

fi = 10MHz

V

IN

 = V

CC

  

V

IN

 = GND  

0.6

1.5

mA

50% Duty Cycle

x

OE 

= GND

One Bit Toggling

V

IN

  = 3.4V

V

IN

  = GND

0.9

2.3

V

CC

 = Max.

Outputs Open

fi = 2.5MHz

V

IN

 = V

CC

  

V

IN

 = GND  

2.4

4.5

(5)

50% Duty Cycle

x

OE

 = GND

Sixteen Bits Toggling

V

IN

 = 3.4V

V

IN

 = GND

6.4

16.5

(5)

background image

5.2

7

IDT54/74FCT16244T/AT/CT/ET, 162244T/AT/CT/ET,

166244T/AT/CT, 162H244T/AT/CT/ET FAST CMOS 16-BIT BUFFER/LINE DRIVER

MILITARY AND COMMERCIAL TEMPERATURE RANGES

SWITCHING CHARACTERISTICS OVER OPERATING RANGE FOR FCT16244T/FCT162244T

2544 tbl 11

2544 tbl 12

NOTES:

1. See test circuit and waveforms.

2. Minimum limits are guaranteed but not tested on Propagation Delays.

3. Skew between any  two outputs of the same package switching in the same direction.  This parameter is guaranteed by design.

FCT16244T/162244T/166244T

FCT16244AT/162244AT/166244AT

Com'l.

Mil.

Com'l.

Mil.

Symbol

Parameter

Condition

(1)

Min.

(2)

Max.

Min.

(2)

Max.

Min.

(2)

Max.

Min.

(2)

Max.

Unit

t

PLH

t

PHL

Propagation Delay

xAx to xYx

C

L

 = 50pF

R

L

 = 500

1.5

6.5

1.5

7.0

1.5

4.8

1.5

5.1

ns

t

PZH

t

PZL

Output Enable Time

1.5

8.0

1.5

8.5

1.5

6.2

1.5

6.5

ns

t

PHZ

t

PLZ

Output Disable Time

1.5

7.0

1.5

7.5

1.5

5.6

1.5

5.9

ns

t

SK

(o)

Output Skew

(3)

0.5

0.5

0.5

0.5

ns

FCT16244CT/162244CT/166244CT

FCT16244ET/162244ET

Com'l.

Mil.

Com'l.

Mil.

Symbol

Parameter

Condition

(1)

Min.

(2)

Max.

Min.

(2)

Max.

Min.

(2)

Max.

Min.

(2)

Max.

Unit

t

PLH

t

PHL

Propagation Delay

xAx to xYx

C

L

 = 50pF

R

L

 = 500

1.5

4.1

1.5

4.6

1.5

3.2

ns

t

PZH

t

PZL

Output Enable Time

1.5

5.8

1.5

6.5

1.5

4.4

ns

t

PHZ

t

PLZ

Output Disable Time

1.5

5.2

1.5

5.7

1.5

3.6

ns

t

SK

(o)

Output Skew

(3)

0.5

0.5

0.5

ns

background image

IDT54/74FCT16244T/AT/CT/ET, 162244T/AT/CT/ET,

166244T/AT/CT, 162H244T/AT/CT/ET FAST CMOS 16-BIT BUFFER/LINE DRIVER

MILITARY AND COMMERCIAL TEMPERATURE RANGES

5.2

8

SWITCH POSITION

TEST CIRCUITS AND WAVEFORMS

TEST CIRCUITS FOR ALL OUTPUTS

DEFINITIONS:

C

L

=

Load capacitance: includes jig and probe capacitance.

R

=

Termination resistance: should be equal to Z

OUT 

of the Pulse

Generator.

2544 lnk 13

Test

Switch

Disable Low

Enable Low

Closed

All Other Tests

Open

Open Drain

Pulse

Generator

R

T

D.U.T.

V

CC

V

IN

C

L

V

OUT

50pF

500

500

7.0V

3V

1.5V

0V

3V

1.5V

0V

3V

1.5V

0V

3V

1.5V

0V

DATA

INPUT

TIMING 

INPUT

ASYNCHRONOUS CONTROL

PRESET

CLEAR

ETC.

SYNCHRONOUS CONTROL

t

SU

t

H

t

REM

t

SU

t

H

HIGH-LOW-HIGH

PULSE

LOW-HIGH-LOW

PULSE

t

W

1.5V

1.5V

SAME PHASE

INPUT TRANSITION

3V

1.5V

0V

1.5V

V

OH

t

PLH

OUTPUT

OPPOSITE PHASE

INPUT TRANSITION

3V

1.5V

0V

t

PLH

t

PHL

t

PHL

V

OL

CONTROL

INPUT

3V

1.5V

0V

3.5V

0V

OUTPUT

NORMALLY

LOW

OUTPUT

NORMALLY

HIGH

SWITCH

CLOSED

SWITCH

OPEN

V

OL

0.3V

0.3V

t

PLZ

t

PZL

t

PZH

t

PHZ

3.5V

0V

1.5V

1.5V

ENABLE

DISABLE

V

OH

PRESET

CLEAR

CLOCK ENABLE

ETC.

SET-UP, HOLD AND RELEASE TIMES

PULSE WIDTH

2544 drw 05

ENABLE AND DISABLE TIMES

PROPAGATION DELAY

2544 drw 07

2544 drw 06

NOTES:

1. Diagram shown for input Control Enable-LOW and input Control

Disable-HIGH

2. Pulse Generator for All Pulses: Rate 

 1.0MHz; t

F

 

 2.5ns; t

R

 

 2.5ns

2544 drw 09

2544 drw 08

background image

5.2

9

IDT54/74FCT16244T/AT/CT/ET, 162244T/AT/CT/ET,

166244T/AT/CT, 162H244T/AT/CT/ET FAST CMOS 16-BIT BUFFER/LINE DRIVER

MILITARY AND COMMERCIAL TEMPERATURE RANGES

ORDERING INFORMATION

IDT         XX      

Temp. Range

XXXX

Device Type

X

Package

X

Process

Blank

B

PV

PA

PF

E

244T

244AT

244CT

244ET

Commercial

MIL-STD-883, Class B

Shrink Small Outline Package (SO48-1)

Thin Shrink Small Outline Package (SO48-2)

Thin Very Small Outline Package (SO48-3)

CERPACK (E48-1)

Non-Inverting 16-Bit Buffer/Line Driver

54

74

–55

°

C to +125

°

C

–40

°

C to +85

°

C

FCT

2544 drw 10

X

Drive

Blank

H

Standard

Bus-hold

X

Bus Hold

16

162

166

16-Bit High Drive

16-Bit Balanced Drive

16-Bit Light Drive