SN54LS323 Datasheet, PDF (1/5 Pages) Motorola, Inc – 8-BIT SHIFT/STORAGE REGISTER WITH 3-STATE OUTPUTS

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