74HC688 View Datasheet(PDF) - Nexperia B.V. All rights reserved

Part Name

Description

Manufacturer

74HC688

8-bit magnitude comparator

Nexperia B.V. All rights reserved 

Nexperia

74HC688

8-bit magnitude comparator

10.1 Waveforms and test circuit

VI

Pn, Qn input

VM

VM

GND

tPHL

tPLH

VOH

P=Q output

VOL

VY

VM

VX

tTHL

VY

VM

VX

tTLH

aaa-028706

Measurement points are given in Table 8.

VOL and VOH are typical voltage output levels that occur with the output load.

Figure 6. Waveforms showing the word inputs (Pn, Qn) to the equal to output (P=Q) propagation delays and the

output transition times.

VI

E input

VM

VM

GND

tPHL

tPLH

VOH

P=Q output

VOL

VY

VM

VX

tTHL

VY

VM

VX

tTLH

aaa-028705

Measurement points are given in Table 8.

VOL and VOH are typical voltage output levels that occur with the output load.

Figure 7. Waveforms showing the enable input (E) to the equal to output (P=Q) propagation delays and the output

transition times.

Table 8. Measurement points

Input

VI

VM

GND to VCC

0.5VCC

Output

VM

0.5VCC

VX

0.1VCC

VY

0.9VCC

74HC688

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 3 — 4 July 2018

© Nexperia B.V. 2018. All rights reserved.

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