M54HC279 datasheet(1/10 Pages) STMICROELECTRONICS

Part #	M54HC279

Description	QUAD S - R LATCH

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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M54HC279

M74HC279

March 1993

QUAD S - R LATCH

B1R

(Plastic Package)

ORDER CODES :

M54HC279F1R

M74HC279M1R

M74HC279B1R

M74HC279C1R

F1R

(Ceramic Package)

M1R

(Micro Package)

C1R

(Chip Carrier)

PIN CONNECTIONS (top view)

NC =

No Internal

Connection

.

HIGH SPEED

tPD = 12 ns (TYP.) AT VCC =5 V

.

LOW POWER DISSIPATION

ICC =2

µA (MAX.) AT TA =25 °C

.

HIGH NOISE IMMUNITY

VNIH =VNIL =28 % VCC (MIN.)

.

OUTPUT DRIVE CAPABILITY

10 LSTTL LOADS

.

SYMMETRICAL OUTPUT IMPEDANCE

IOH =IOL = 4 mA (MIN.)

.

BALANCED PROPAGATION DELAYS

tPLH =tPHL

.

WIDE OPERATING VOLTAGE RANGE

VCC (OPR) = 2 V TO 6 V

.

PIN AND FUNCTION COMPATIBLE

WITH 54/74LS279

The M54/74HC279 is a high speed CMOS QUAD S

- R LATCH fabricated in silicon gate C

2MOS tech-

nology. It has the same high speed performance of

LSTTL combined with true CMOS low power con-

sumption.

All inputs are equipped with protection circuits

against static discharge and transient excess volt-

age.

DESCRIPTION

INPUT AND OUTPUT EQUIVALENT CIRCUIT

1/10

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