M54HCT165 Datasheet, PDF (1/13 Pages) STMicroelectronics – 8 BIT PISO SHIFT REGISTER

M54HCT165
M74HCT165
. HIGH SPEED
t_PD = 17 ns (TYP.) AT V_CC = 5 V
. LOW POWER DISSIPATION
ICC = 4 µA (MAX.) AT TA = 25 °C
. OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
. BALANCED PROPAGATION DELAYS
tPLH = tPHL
. SYMMETRICAL OUTPUT IMPEDANCE
I_OL = IOH = 4 mA (MIN.)
. COMPATIBLE WITH TTL OUTPUTS
VIH = 2 V (MIN.) VIL = 0.8 V (MAX.)
. PIN AND FUNCTION COMPATIBLE
WITH 54/74LS165
DESCRIPTION
The M54/74HCT165 is a high speed CMOS 8 BIT
PISO SHIFT REGISTER fabricated in silicon gate
C²MOS technology. It has the same high speed
performance of LSTTL combined with true CMOS
low power consumption. It achives the high speed
operation similar to equivalent LSTTL while
maintaining the CMOS low power dissipation.
This device contains eight clocked master slave RS
flip-flops connected as a shift register, with auxiliary
gating to provide over-riding asynchronous parallel
entry. Parallel data entrens when the shift/load input
is low. The parallel data can change while shift/load
is low, provided that the recommended set-up and
hold times are observed. For clocked operation,
shift/load must be high. The two clock input perform
identically; one can be used as a clock inhibit by
applying a high signal; to permit this operation
clocking is accomplished through a 2 input nor
gates.
To avoid double clocking, however, the inhibit signal
should only go high while the clock is high.
Otherwise the rising inhibit signal will cause the
same response as rising clock edge.This integrated
circuit has input and output characteristics that are
fully compatible with 54/74 LSTTL logic families.
M54/74HCT devices are designed to directly
interface HSCMOS systems with TTL and NMOS
components. They are also plug in replacements for
LSTTL devices giving a reduction of power
consumption. All inputs are equipped with
protection circuits against static discharge and
transient excess voltage.
October 1993
8 BIT PISO SHIFT REGISTER
B1R
(Plastic Package)
F1R
(Ceramic Package)
M 1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M54HCT165F1R M74HCT165M1R
M74HCT165B1R M74HCT165C1R
PIN CONNECTIONS (top view)
NC =
No Internal
Connection
1/13