74HC595 datasheet(1/13 Pages) STMICROELECTRONICS

部件名	74HC595

功能描述	8 BIT SHIFT REGISTER WITH OUTPUT LATCHES 3 STATE

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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M54HC595

M74HC595

April 1993

8 BIT SHIFT REGISTER WITH OUTPUT LATCHES (3 STATE)

B1R

(Plastic Package)

ORDER CODES :

M54HC595F1R

M74HC595M1R

M74HC595B1R

M74HC595C1R

F1R

(Ceramic Package)

M1R

(Micro Package)

C1R

(Chip Carrier)

PIN CONNECTIONS (top view)

NC =

No Internal

Connection

.

HIGH SPEED

fMAX = 55 MHz (TYP.) AT VCC =5 V

.

LOW POWER DISSIPATION

ICC =4

µA (MAX.) AT TA =25 °C

.

HIGH NOISE IMMUNITY

VNIH =VNIL =28 % VCC (MIN.)

.

OUTPUT DRIVE CAPABILITY

15 LSTTL LOADS FOR QA TO QH

10 LSTTL LOADS FOR QH’

.

SYMMETRICAL OUTPUT IMPEDANCE

|IOH|= IOL = 6 mA (MIN.) FOR QA TO QH

|IOH|= IOL = 4 mA (MIN.) FOR QH’

.

BALANCED PROPAGATION DELAYS

tPLH =tPHL

.

WIDE OPERATING VOLTAGE RANGE

VCC (OPR) = 2 V TO 6 V

.

PIN AND FUNCTION COMPATIBLE

WITH LSTTL 54/74LS595

DESCRIPTION

The M54/74HC595 is a high speed CMOS 8-BIT

SHIFT

REGISTERS/OUTPUT

LATCHES

(3-

STATE) fabricated in silicon C

2MOS technology. It

has the same high speed performance of LSTTL

combined with true CMOS low power consumption.

This device contains an 8-bit serial-in, parallel-out

shift register that feeds an 8-bit D-type storage reg-

ister. The storage register has 8 3-STATE outputs.

Separate clocks are provided for both the shift reg-

ister and the storage register.

The shift register has a direct-overriding clear, serial

input, and serial output (standard) pins for cascad-

ing. Both the shift register and storage register use

positive-edge triggered clocks. If both clocks are

connected together, the shift register state will al-

ways be one clock pulse ahead of the storage reg-

ister.

All inputs are equipped with protection circuits

against static discharge and transient excess volt-

age.

1/13

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