SN74LS195A Datasheet, PDF (1/6 Pages) ON Semiconductor – LOW POWER SCHOTTKY

UNIVERSAL 4-BIT
SHIFT REGISTER
The SN54 / 74LS195A is a high speed 4-Bit Shift Register offering typical
shift frequencies of 39 MHz. It is useful for a wide variety of register and
counting applications. It utilizes the Schottky diode clamped process to
achieve high speeds and is fully compatible with all Motorola TTL products.
• Typical Shift Right Frequency of 39 MHz
• Asynchronous Master Reset
• J, K Inputs to First Stage
• Fully Synchronous Serial or Parallel Data Transfers
• Input Clamp Diodes Limit High Speed Termination Effects
CONNECTION DIAGRAM DIP (TOP VIEW)
VCC Q0 Q1 Q2 Q3 Q3 CP PE
16 15 14 13 12 11 10 9
NOTE:
The Flatpak version
has the same pinouts
(Connection Diagram) as
the Dual In-Line Package.
1
2
MR J
3
4
56
78
K P0 P1 P2 P3 GND
PIN NAMES
LOADING (Note a)
HIGH
LOW
PE
P0 – P3
J
K
CP
MR
Q0 – Q3
Q3
Parallel Enable (Active LOW) Input
Parallel Data Inputs
First Stage J (Active HIGH) Input
First Stage K (Active LOW) Input
Clock (Active HIGH Going Edge) Input
Master Reset (Active LOW) Input
Parallel Outputs (Note b)
Complementary Last Stage Output (Note b)
0.5 U.L.
0.5 U.L.
0.5 U.L.
0.5 U.L.
0.5 U.L.
0.5 U.L.
10 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.
5 (2.5) 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)
b. Temperature Ranges.
SN54/74LS195A
UNIVERSAL 4-BIT
SHIFT REGISTER
LOW POWER SCHOTTKY
16
1
J SUFFIX
CERAMIC
CASE 620-09
16
1
N SUFFIX
PLASTIC
CASE 648-08
16
1
D SUFFIX
SOIC
CASE 751B-03
ORDERING INFORMATION
SN54LSXXXJ
SN74LSXXXN
SN74LSXXXD
Ceramic
Plastic
SOIC
LOGIC SYMBOL
9456 7
2
J ^{PE P0 P1 P2 P3}
10
CP
Q3
11
3
K _{MR Q0 Q1 Q2 Q3}
1 15 14 13 12
VCC = PIN 16
GND = PIN 8
FAST AND LS TTL DATA
5-366