M54HC690 datasheet(18/23 Pages) STMICROELECTRONICS

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M54HC690 数据表(PDF) 18 Page - STMicroelectronics

部件名	M54HC690

功能描述	HC691/693 4 BIT BINARY COUNTER/REGISTER 3-STATE HC690/692 DECADE COUNTER/REGISTER 3-STATE

PDF	23 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

18 / 23 page

SWITCHING CHARACTERISTICS (continued)

tPLZ,tPZL

The 1 k

Ω load resistors should be connected be-

tween outputs and VCC line and the 50 pF load ca-

pacitors should be connected between outputs

and GND line. All inputs except G input should be

connected to VCC line or GND line such that out-

puts will be in low logic level while G input is held

low.

tPHZ,tPZH

The 1 k

Ω load resistors and the 50 pF load capa-

citors should be connected between each output

and GND line.

All inputs except G input should be connected to

VCC or GND line such that output will be in high

logic level while G input is held low.

M54/M74HC690/691/692/693

18/23

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