M54HC688 datasheet(1/10 Pages) STMICROELECTRONICS

部件名	M54HC688

功能描述	8 BIT EQUALITY COMPARATOR

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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M54HC688

M74HC688

October 1992

8 BIT EQUALITY COMPARATOR

B1R

(Plastic Package)

ORDER CODES :

M54HC688F1R

M74HC688M1R

M74HC688B1R

M74HC688C1R

F1R

(Ceramic Package)

M1R

(Micro Package)

C1R

(Chip Carrier)

PIN CONNECTIONS (top view)

NC =

No Internal

Connection

DESCRIPTION

.

HIGH SPEED

tPD = 17 ns (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

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 54/74LS688

The M54/74HC688 utilizes silicon gate C

2MOS

technology to achieve operating speeds equivalent

to LSTTL devices. Along with the low power dissi-

pation and high noise immunity of standard C

2MOS

integrated circuit, it possesses the driving capability

of 10 LSTTL load. The M54/74HC688 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 single active low enable is provided to fa-

cilitate cascading several packages to enable com-

parison of words greater than 8 bits. All inputs are

equipped with protection circuit against static dis-

charge and transient excess voltage.

1/10

类似零件编号 - M54HC688

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STMicroelectronics	M54HC688	300Kb / 10P	RAD-HARD 8 BIT EQUALITY COMPARATOR 01-Jun-2004
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	M54HC688D	306Kb / 29P	Rad-hard high speed 2 to 6 V CMOS logic series 10-Aug-2011
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