M74HC688 Datasheet, PDF (1/9 Pages) STMicroelectronics – 8 BIT EQUALITY COMPARATOR

M74HC688
8 BIT EQUALITY COMPARATOR
s HIGH SPEED:
t_PD = 17ns (TYP.) at V_CC = 6V
s LOW POWER DISSIPATION:
I_CC = 4µA(MAX.) at T_A=25°C
s HIGH NOISE IMMUNITY:
V_NIH = V_NIL = 28 % V_CC (MIN.)
s SYMMETRICAL OUTPUT IMPEDANCE:
|I_OH| = I_OL = 4mA (MIN)
s BALANCED PROPAGATION DELAYS:
t_PLH ≅ t_PHL
s WIDE OPERATING VOLTAGE RANGE:
V_CC (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
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