M74HCT688| Datasheet

M74HCT688, M74HCT688B1R, M74HCT688RM13TR

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M74HCT688
8 BIT EQUALITY COMPARATOR
s

HIGH SPEED: tPD = 21ns (TYP.) at VCC = 4.5V LOW POWER DISSIPATION: ICC = 4uA(MAX.) at TA=25 C COMPATIBLE WITH TTL OUTPUTS : VIH = 2V (MIN.) VIL = 0.8V (MAX) SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 4mA (MIN) BALANCED PROPAGATION DELAYS: tPLH tPHL PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 688

DIP

SOP

TSSOP

ORDER CODES
PACKAGE DIP SOP TSSOP TUBE M74HCT688B1R M74HCT688M1R T&R M74HCT688RM13TR M74HCT688TTR

DESCRIPTION The M74HCT688 is an high speed CMOS 8 BIT EQUALITY COMPARATOR fabricated with silicon gate C2MOS technology. The M74HCT688 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 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

September 2001

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