SN54LS395 Datasheet, PDF (1/6 Pages) Motorola, Inc – 4-BIT SHIFT REGISTER WITH 3-STATE OUTPUTS

4-BIT SHIFT REGISTER
WITH 3-STATE OUTPUTS
The SN74LS395 is a 4-Bit Register with 3-state outputs and can operate
in either a synchronous parallel load or a serial shift-right mode, as
determined by the Select input. An asynchronous active LOW Master Reset
(MR) input overrides the synchronous operations and clears the register. An
active HIGH Output Enable (OE) input controls the 3-state output buffers, but
does not interfere with the other operations. The fourth stage also has a
conventional output for linking purposes in multi-stage serial operations.
• Shift Left or Parallel 4-Bit Register
• 3-State Outputs
• Input Clamp Diodes Limit High-Speed Termination Effects
CONNECTION DIAGRAM DIP (TOP VIEW)
VCC O0 O1 O2 O3 Q3 CP OE
16 15 14 13 12 11 10 9
1
2
3
4
5
6
MR DS P0 P1 P2 P3
78
S GND
PIN NAMES
P0 – P3
DS
S
CP
MR
OE
O0 – O3
Q3
Parallel Inputs
Serial Data Input
Mode Select Input
Clock (Active LOW) Input
Master Reset (Active LOW) Input
Output Enable (Active HIGH) Input
3-State Register Outputs
Register Output
NOTES:
a) 1 TTL Unit Load (U.L.) = 40 µA HIGH/1.6 mA LOW.
LOADING (Note a)
HIGH
LOW
0.5 U.L.
0.5 U.L.
0.5 U.L.
0.5 U.L.
0.5 U.L.
0.5 U.L.
65 U.L.
10 U.L.
0.25 U.L.
0.25 U.L.
0.25 U.L.
0.25 U.L.
0.25 U.L.
0.25 U.L.
15 U.L.
5 U.L.
SN74LS395
4-BIT SHIFT REGISTER
WITH 3-STATE OUTPUTS
LOW POWER SCHOTTKY
16
1
16
1
16
1
J SUFFIX
CERAMIC
CASE 620-09
N SUFFIX
PLASTIC
CASE 648-08
D SUFFIX
SOIC
CASE 751B-03
ORDERING INFORMATION
SN74LSXXXJ
SN74LSXXXN
SN74LSXXXD
Ceramic
Plastic
SOIC
LOGIC SYMBOL
734 5 6
S P0 P1 P2 P3
2
DS
10
CP
Q3
11
9
OE
MR O0 O1 O2 O3
1 15 14 13 12
VCC = PIN 16
GND = PIN 8
FAST AND LS TTL DATA
5-551