M74HC593 datasheet(1/12 Pages) STMICROELECTRONICS

Part #	M74HC593

Description	8 BIT BINARY COUNTER WITH INPUT REGISTER 3-STATE

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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M54HC593

M74HC593

October 1993

8 BIT BINARY COUNTER WITH INPUT REGISTER (3-STATE)

B1R

(Plastic Package)

ORDER CODES :

M54HC593F1R

M74HC593M1R

M74HC593B1R

M74HC593C1R

F1R

(Ceramic Package)

M1R

(Micro Package)

C1R

(Chip Carrier)

PIN CONNECTIONS (top view)

NC =

No Internal

Connection

.

HIGH SPEED

fMAX = 80 MHz (TYP.) AT VCC =5 V

.

LOW POWER DISSIPATION

ICC =4

µA (MAX.) AT TA =25 °C

.

OUTPUT DRIVE CAPABILITY

10 LSTTL LOADS FOR RCO

15 LSTTL LOADS FOR Qn

.

BALANCED PROPAGATION DELAYS

tPLH =tPHL

.

SYMMETRICAL OUTPUT IMPEDANCE

IOL =

IOH = 6 mA (MIN.) for Qn

IOL =

IOH = 4 mA (MIN.) for RCO

.

HIGH NOISE IMMUNITY

VNIH =VNIL =28 % VCC (MIN.)

.

WIDE OPERATING VOLTAGE RANGE

VCC (OPR) = 2 V TO 6 V

.

PIN AND FUNCTION COMPATIBLE

WITH 54/74LS593

DESCRIPTION

The M54/74HC593 is a high speed CMOS 8 BIT

REGISTER COUNTER (3 STATE) fabricated with

silicon gate C

2MOS technology. It has the same

high speed performance of LSTTL combined with

true CMOS low power consumption.

The M54/74HC593 consists of a parallel input, 8 bit

storage register feeding an 8 bit binary counter. Both

the register and the counter have individual positive

edge-triggered clock. In addition, the counter has di-

rect load and clear functions. Expansion is easily ac-

complished by connecting RCO of first stage to the

count enable CCKEN, of the second stage etc.

The M54/74HC593 comes in a 20 pin package and

has 3 state I/O, which provides parallel counter out-

puts.

All inputs are equipped with protection circuits

against static discharge and transient excess volt-

age.

1/12

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