5-171

FAST AND LS TTL DATA

4-BIT SHIFT REGISTER

The SN54/74LS95B is a 4-Bit Shift Register with serial and parallel

synchronous operating modes. The serial shift right and parallel load are acti-

vated by separate clock inputs which are selected by a mode control input.

The data is transferred from the serial or parallel D inputs to the Q outputs

synchronous with the HIGH to LOW transition of the appropriate clock input.

The LS95B is fabricated with the Schottky barrier diode process for high

speed and is completely compatible with all Motorola TTL families.

NOTE:

The Flatpak version has the

same pinouts (Connection

Diagram) as the Dual In-Line

Package.

CONNECTION DIAGRAM DIP (TOP VIEW)

VCC = PIN 14

GND = PIN 7

14

13

12

11

10

9

1

2

3

4

5

6

8

7

VCC Q0

Q1

Q2

Q3 CP1 CP2

DS

P0

P1

P2

P3

S

GND

PIN NAMES

LOADING (Note a)

HIGH

LOW

S

Mode Control Input

0.5 U.L.

0.25 U.L.

DS

Serial Data Input

0.5 U.L.

0.25 U.L.

P0 – P3

Parallel Data Inputs

0.5 U.L.

0.25 U.L.

CP1

Serial Clock (Active LOW Going Edge) Input

0.5 U.L.

0.25 U.L.

CP2

Parallel Clock (Active LOW Going Edge) Input

0.5 U.L.

0.25 U.L.

Q0 – Q3

Parallel Outputs (Note b)

10 U.L.

5 (2.5) U.L.

NOTES:

a. 1 TTL Unit Load (U.L.) = 40

µA HIGH/1.6 mA LOW.

b. The Output LOW drive factor is 2.5 U.L. for Military (54) and 5 U.L. for Commercial (74)

Temperature Ranges.

GUARANTEED OPERATING RANGES

Symbol

Parameter

Min

Typ

Max

Unit

VCC

Supply Voltage

54

74

4.5

4.75

5.0

5.0

5.5

5.25

V

TA

Operating Ambient Temperature Range

54

74

– 55

0

25

25

125

70

°C

IOH

Output Current — High

54, 74

– 0.4

mA

IOL

Output Current — Low

54

74

4.0

8.0

mA

SN54/74LS95B

4-BIT SHIFT REGISTER

LOW POWER SCHOTTKY

J SUFFIX

CERAMIC

CASE 632-08

N SUFFIX

PLASTIC

CASE 646-06

14

1

14

1

ORDERING INFORMATION

SN54LSXXJ

Ceramic

SN74LSXXN

Plastic

SN74LSXXD

SOIC

14

1

D SUFFIX

SOIC

CASE 751A-02