M54HCT164 Datasheet, PDF (1/12 Pages) STMicroelectronics – 8 BIT SIPO SHIFT REGISTER

M54HCT164
M74HCT164
. HIGH SPEED
t_PD = 20 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 = 4 mA (MIN.)
. SYMMETRICAL OUTPUT IMPEDANCE
I_OL = IOH = 4 mA (MIN)
. COMPATIBLE WITH TTL OUTPUTS
VIH = 2V (MIN.) VIL = 0.8V (MAX)
. WIDE OPERATING VOLTAGE RANGE
V_CC (OPR) = 2 V TO 6 V
. PIN AND FUNCTION COMPATIBLE
WITH 54/74LS164
DESCRIPTION
The M54/74HCT164 is a high speed CMOS 8 BIT
SIPO SHIFT REGISTER fabricated in silicon gate
C²MOS technology. It has the same high speed per-
formance of LSTTL combined with true CMOS low
power consumption.
The HCT164 is an 8 bit shift register with serial data
entry and an output from each of the eight stages.
Data is entered serially through one of two inputs (A
or B), either of these inputs can be used as an active
high enable for data entry through the other input.
An unused input must be high, or both inputs con-
nected together. Each low-to-high transition on the
clock input shifts data one place to the right and
enters into QA, the logic NAND of the two data inputs
(A • B), the data that existed before the rising clock
edge. A low level on the clear input overrides all
other inputs and clears the register asynchronously,
forcing all Q outputs low.
All inputs are equipped with protection circuits
against static discharge and transient excess volt-
age.
This integrated circuit has input and output charac-
teristics that are fully compatible with 54/74 LSTTL
logic families. M54/74HCT devices are designed to
directly interface HSC²MOS systems with TTL and
NMOS components. They are also plug in replace-
ments for LSTTL devices giving a reduction of
power consumption.
February 1993
8 BIT SIPO SHIFT REGISTER
B1R
(Plastic Package)
F1R
(Ceramic Package)
M 1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M54HCT164F1R M74HCT164M1R
M74HCT164B1R M74HCT164C1R
PIN CONNECTIONS (top view)
NC =
No Internal
Connection
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