SN74LS292, SN74LS294

SDLS153A – JANUARY 1981 – REVISED JANUARY 2016

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Pin Functions, SN74LS294

PIN

I/O

DESCRIPTION

NAME

PDIP

A

2

I

Programming input A

B

1

I

Programming input B

C

15

I

Programming input C

CLK1

4

I

Clock 1 input

CLK2

5

I

Clock 2 input

CLR

11

I

Active-low clear input

D

14

I

Programming input D

E

—

I

Programming input E

GND

8

-

Ground

NC

6, 9 ,10, 12, 13

-

No connect

Q

7

O

Q Output

TP

3

O

Test Point

TP1

—

O

Test Point

TP2

—

O

Test Point

TP3

—

O

Test Point

VCC

16

-

Power

6 Specifications

6.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)

(1)

MIN

MAX

UNIT

VCC

(2)

Supply voltage

7

V

Input voltage

7

V

TJ

Junction temperature

150

°C

Tstg

Storage temperature

–65

150

°C

(1)

Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings

only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended

Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

(2)

Voltage values are with respect to network ground terminal.

6.2 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)

MIN

NOM

MAX

UNIT

VCC

Supply voltage

4.75

5

5.25

V

VIH

High-level input voltage

2

V

VIL

Low-level input voltage

0.8

V

IOH

High-level output current (Q only)

–1.2

mA

IOL

Low-level output current (Q only)

24

mA

fclock

Clock frequency

0

30

MHz

tw

Duration of clock input pulse

16

ns

SN74LS292

55

tw

Duration of clear pulse

ns

SN74LS294

35

tsu

Clear inactive-state set-up time

15

ns

TA

Operating free-air temperature

0

70

°C

4

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