IDT54/74FCT161T/AT/CT, IDT54/74FCT163T/AT/CT

FAST CMOS SYNCHRONOUS PRESETTABLE BINARY COUNTERS

MILITARY AND COMMERCIAL TEMPERATURE RANGES

6.7

2

PIN CONFIGURATIONS

IDT54/74FCT861 10-BIT TRANSCEIVERS

PIN DESCRIPTION

Pin Names

Description

CEP

Count Enable Parallel Input

CET

Count Enable Trickle Input

CP

Clock Pulse Input (Active Rising Edge)

MR (‘161)

Asynchronous Master Reset Input (Active LOW)

SR (‘163)

Synchronous Reset Input (Active LOW)

Parallel Data Inputs

PE

Parallel Enable Input (Active LOW)

Flip-Flop Outputs

TC

Terminal Count Output

FUNCTION TABLE

(2)

Action on the Rising

SR

SR

(1)

PE

PE

CET

CEP

Clock Edge(s)

L

X

X

X

Reset (Clear)

H

L

X

X

H

H

H

H

Count (Increment)

H

H

L

X

No Change (Hold)

H

H

X

L

No Change (Hold)

2611 tbl 01

ABSOLUTE MAXIMUM RATINGS

(1)

Symbol

Rating

Commercial

Military

Unit

with Respect to

GND

–0.5 to +7.0

–0.5 to +7.0

V

with Respect to

GND

–0.5 to

–0.5 to

V

Operating

Temperature

0 to +70

–55 to +125

°C

Temperature

Under Bias

–55 to +125

–65 to +135

°C

Storage

Temperature

–55 to +125

–65 to +150

°C

Power Dissipation

0.5

0.5

W

DC Output

Current

–60 to +120

–60 to +120

mA

°C, f = 1.0MHz)

Symbol

Conditions

Typ.

Max. Unit

Input

Capacitance

6

10

pF

Output

Capacitance

8

12

pF

NOTE:

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

NOTES:

2611 tbl 02

1. 163 only.

2. H = HIGH Voltage Level, L = LOW Voltage Level, X = Don’t Care.

2611 lnk 04

NOTES:

1. Stresses greater than those listed under ABSOLUTE MAXIMUM RAT-

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

only and functional operation of the device at these or any other condi-

tions above those indicated in the operational sections of this specifica-

tion is not implied. Exposure to absolute maximum rating conditions for

extended periods may affect reliability. No terminal voltage may exceed

3. Outputs and I/O terminals only.

2611 lnk 03

GND

CEP

5

6

7

8

1

2

3

4

16

15

14

13

12

11

10

9

Vcc

P16-1,

D16-1,

S016-1,

S016-7

&

E16-1

*R

CP

TC

CET

PE

2611 drw 02

2611 drw 03

4

5

6

7

8

L20-2

18

17

16

15

14

INDEX

NC

NC

9 10 11 12 13

32

1

20 19

LCC

TOP VIEW

DIP/SOIC/QSOP/CERPACK

TOP VIEW

*

MR for '161

*

SR for ‘163