SN74LS323DW データシートの表示（PDF） - Motorola => Freescale

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SN74LS323DW

8-BIT SHIFT/STORAGE REGISTER WITH 3-STATE OUTPUTS

Motorola => Freescale 

8-BIT SHIFT/STORAGE REGISTER

WITH 3-STATE OUTPUTS

The SN54 / 74LS323 is an 8-Bit Universal Shift / Storage Register with

3-state outputs. Its function is similar to the SN54 / 74LS299 with the exception

of Synchronous Reset. Parallel load inputs and flip-flop outputs are

multiplexed to minimize pin count. Separate inputs and outputs are provided

for flip-flops Q0 and Q7 to allow easy cascading.

Four operation modes are possible: hold (store), shift left, shift right, and

parallel load. All modes are activated on the LOW-to-HIGH transition of the

Clock.

• Common I/O for Reduced Pin Count

• Four Operation Modes: Shift Left, Shift Right, Parallel Load and Store

• Separate Continuous Inputs and Outputs from Q0 and Q7 Allow Easy

Cascading

• Fully Synchronous Reset

• 3-State Outputs for Bus Oriented Applications

• Input Clamp Diodes Limit High-Speed Termination Effects

• ESD > 3500 Volts

CONNECTION DIAGRAM DIP (TOP VIEW)

VCC S1 DS7 Q7 I/O7 I/O5 I/O3 I/O1 CP DS0

20 19 18 17 16 15 14 13 12 11

NOTE:

The Flatpak version

has the same pinouts

(Connection Diagram) as

the Dual In-Line Package.

1 2 3 4 5 6 7 8 9 10

S0 OE1 OE2 I/O6 I/O4 I/O2 I/O0 Q0 SR GND

SN54/74LS323

8-BIT SHIFT/STORAGE REGISTER

WITH 3-STATE OUTPUTS

LOW POWER SCHOTTKY

20

1

20

1

20

1

J SUFFIX

CERAMIC

CASE 732-03

N SUFFIX

PLASTIC

CASE 738-03

DW SUFFIX

SOIC

CASE 751D-03

ORDERING INFORMATION

SN54LSXXXJ Ceramic

SN74LSXXXN Plastic

SN74LSXXXDW SOIC

PIN NAMES

CP

DS0

DS7

I/On

OE1, OE2

Q0, Q7

S0, S1

SR

Clock Pulse (active positive going edge) Input

Serial Data Input for Right Shift

Serial Data Input for Left Shift

Parallel Data Input or

Parallel Output (3-State) (Note c)

3-State Output Enable (active LOW) Inputs

Serial Outputs (Note b)

Mode Select Inputs

Synchronous Reset (active LOW) Input

NOTES:

a) 1 TTL LOAD = 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 Temperature Ranges.

c) The output LOW drive factor is 7.5 U.L for Military (54) and 15 U.L. for Commercial Temperature Ranges.

The output HIGH drive factor is 25 U.L. for Military (54) and 65 U.L. for Commercial Temperature Ranges.

LOADING (Note a)

HIGH

LOW

0.5 U.L.

0.5 U.L.

0.5 U.L.

1.0 U.L.

65 (25) U.L.

0.5 U.L.

10 U.L.

1 U.L.

0.5 U.L.

0.25 U.L.

0.25 U.L.

0.25 U.L.

0.5 U.L.

15 (7.5) U.L.

0.25 U.L.

5 (2.5) U.L.

0.25 U.L.

FAST AND LS TTL DATA

5-1

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