February 1988
MM54C95/MM74C95
4-Bit Right-Shift Left-Shift Register
General Description
Features
Y
Medium speed operation
10 MHz (typ.)
e
This 4-bit shift register is a monolithic complementary MOS
(CMOS) integrated circuit composed of four D flip-flops.
This register will perform right-shift or left-shift operations
dependent upon the logical input level to the mode control.
A number of these registers may be connected in series to
form an N-bit right-shift or left-shift register.
e
V
CC
10V, C
50 pF
(typ.)
L
Y
High noise immunity
0.45 V
CC
Y
Low power
100 nW/(typ.)
Y
Tenth power TTL compatible
Drive 2 LTTL loads
3V to 15V
Y
Wide supply voltage range
When a logical ‘‘0’’ level is applied to the mode control in-
put, the output of each flip-flop is coupled to the D input of
the succeeding flip flop. Right-shift operation is performed
by clocking at the clock 1 input, and serial data entered at
the serial input, clock 2 and parallel inputs A through D are
inhibited. With a logical ‘‘1’’ level applied to the mode con-
trol, outputs to succeeding stages are decoupled and paral-
lel loading is possible, or with external interconnection, shift-
left operation can be accomplished by connecting the out-
put of each flip-flop to the parallel input of the previous
flip-flop and serial data is entered at input D.
Y
Synchronous parallel load
Y
Parallel inputs and outputs from each flip-flop
Negative edge triggered clocking
Y
Y
The MM54C95/MM74C95 follows the MM54L95/
MM74L95 Pinout
Applications
Y
Y
Y
Y
Y
Data terminals
Alarm systems
Remote metering
Industrial electronics
Computers
Y
Instrumentation
Y
Automotive
Y
Medical electronics
Block and Connection Diagrams
TL/F/5890–2
TL/F/5890–1
Dual-In-Line Package
TL/F/5890–3
e
e
Mode Control
Mode Control
0 for Right Shift
1 for Left Shift or Parallel Load
TL/F/5890–4
Order Number MM54C95 or MM74C95
C
1995 National Semiconductor Corporation
TL/F/5890
RRD-B30M105/Printed in U. S. A.