CD74HC688 8-Bit Identity/Magnitude Comparators (P=Q) with Enable | TI.com

CD74HC688 (ACTIVE) 8-Bit Identity/Magnitude Comparators (P=Q) with Enable

8-Bit Identity/Magnitude Comparators (P=Q) with Enable - CD74HC688
Datasheet
 

Description

The ’HC688 and ’HCT688 are 8-bit magnitude comparators designed for use in computer and logic applications that require the comparison of two 8-bit binary words. When the compared words are equal the output (Y) is low and can be used as the enabling input for the next device in a cascaded application.

Features

  • Cascadable
  • Fanout (Over Temperature Range)
    • Standard Outputs. . . . . . . . . . . . . . . 10 LSTTL Loads
    • Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
  • Wide Operating Temperature Range . . . -55°C to 125°C
  • Balanced Propagation Delay and Transition Times
  • Significant Power Reduction Compared to LSTTL Logic ICs
  • HC Types
    • 2V to 6V Operation
    • High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V
  • HCT Types
    • 4.5V to 5.5V Operation
    • Direct LSTTL Input Logic Compatibility, VIL = 0.8V (Max), VIH = 2V (Min)
    • CMOS Input Compatibility, Il 1µA at VOL, VOH

Data sheet acquired from Harris Semiconductor

Parametrics

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Part number Order Technology Family VCC (Min) (V) VCC (Max) (V) Bits (#) Voltage (Nom) (V) F @ nom voltage (Max) (MHz) ICC @ nom voltage (Max) (mA) tpd @ nom Voltage (Max) (ns) IOL (Max) (mA) IOH (Max) (mA) Operating temperature range (C) Package Group
CD74HC688 Order now HC     2     6     8     6     70     0.08     36     5.2     -5.2     -55 to 125     PDIP | 20
SOIC | 20
SO | 20
TSSOP | 20    
CD74HC85 Order now HC     2     6     4     6     70     0.08     42     5.2     -5.2     -55 to 125     PDIP | 16
SOIC | 16
SO | 16
TSSOP | 16