M74HC688 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

M74HC688

8 BIT EQUALITY COMPARATOR

STMicroelectronics 

M74HC688

8 BIT EQUALITY COMPARATOR

s HIGH SPEED:

tPD = 17ns (TYP.) at VCC = 6V

s LOW POWER DISSIPATION:

ICC = 4µA(MAX.) at TA=25°C

s HIGH NOISE IMMUNITY:

VNIH = VNIL = 28 % VCC (MIN.)

s SYMMETRICAL OUTPUT IMPEDANCE:

|IOH| = IOL = 4mA (MIN)

s BALANCED PROPAGATION DELAYS:

tPLH ≅ tPHL

s WIDE OPERATING VOLTAGE RANGE:

VCC (OPR) = 2V to 6V

s PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 688

DESCRIPTION

The M74HC688 is an high speed CMOS 8 BIT

EQUALITY COMPARATOR fabricated with silicon

gate C2MOS technology.

The M74HC688 compares bit for bit two 8-bit

words applied on inputs P0 - P7 and inputs Q0 -

Q7 and indicates whether or not they are equal. A

DIP

SOP

TSSOP

ORDER CODES

PACKAGE

TUBE

DIP

SOP

TSSOP

M74HC688B1R

M74HC688M1R

T&R

M74HC688RM13TR

M74HC688TTR

single active low enable is provided to facilitate

cascading several packages to enable

comparison of words greater than 8 bits.

All inputs are equipped with protection circuits

against static discharge and transient excess

voltage.

PIN CONNECTION AND IEC LOGIC SYMBOLS

July 2001

1/9

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