M54HC173

M74HC173

October 1992

QUAD D-TYPE REGISTER (3-STATE)

B1R

(Plastic Package)

ORDER CODES :

M54HC173F1R

M74HC173M1R

M74HC173B1R

M74HC173C1R

F1R

(Ceramic Package)

M1R

(Micro Package)

C1R

(Chip Carrier)

PIN CONNECTIONS (top view)

NC =

No Internal

Connection

DESCRIPTION

.

HIGH SPEED

.

LOW POWER DISSIPATION

.

HIGH NOISE IMMUNITY

.

OUTPUT DRIVE CAPABILITY

15 LSTTL LOADS

.

SYMMETRICAL OUTPUT IMPEDANCE

.

BALANCED PROPAGATION DELAYS

.

WIDE OPERATING VOLTAGE RANGE

.

PIN AND FUNCTION COMPATIBLE WITH

54/74LS 173

The M54/74HC173 is a high speed CMOS QUAD D-

TYPE REGISTER (3-STATE) fabricated in silicon

gate C

It has the same high speed performance of LSTTL

combined with true CMOS low power consumption.

This device is composed of a four-bit register includ-

ing D-type flip-flops and 3-state buffers. The four flip-

flops are controlled by a common clock input

(CLOCK) and a common reset input (CLEAR). Sig-

the respective flip-flops on the positive going transi-

tion of the clock input, only when both clock control

The reset feature is asynchronous and active high.

The stored data are provided on each output only

when both output control inputs (M and N) are held

low, otherwise the outputs go to the high-impedance

state.

All inputs are equipped with protection circuits

against static discharge and transient excess volt-

age.

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