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74HC688D,653

8-bit magnitude comparator

NXP Semiconductors. 

Philips Semiconductors

8-bit magnitude comparator

Product specification

74HC/HCT688

DC CHARACTERISTICS FOR 74HC

For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.

Output capability: standard

ICC category: MSI

AC CHARACTERISTICS FOR 74HC

GND = 0 V; tr = tf = 6 ns; CL = 50 pF

Tamb (°C)

TEST CONDITIONS

SYMBOL PARAMETER

74HC

+25

−40 to +85

−40 to +125

UNIT

VCC

(V)

WAVEFORMS

min. typ. max. min. max. min. max.

tPHL/ tPLH propagation delay

Pn, Qn to P = Q

tPHL/ tPLH propagation delay

E to P = Q

55 170

215

255

2.0 Fig.6

20 34

43

51 ns 4.5

16 29

37

43

6.0

28 120

150

180

2.0 Fig.7

10 24

30

36 ns 4.5

8 20

26

31

6.0

tTHL/ tTLH output transition time

19 75

95

110

2.0 Figs 6 and 7

7 15

19

22 ns 4.5

6 13

16

19

6.0

December 1990

5

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