参数资料
型号: M74HC690M1R
厂商: STMICROELECTRONICS
元件分类: 计数器
英文描述: HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP DECADE COUNTER, PDSO20
封装: SO-20
文件页数: 5/17页
文件大小: 839K
代理商: M74HC690M1R
M74HC690
13/17
WAVEFORM 8 : PROPAGATION DELAY TIME (f=1MHz; 50% duty cycle)
tPLZ, tPZL
The 1K
load resistors should be connected
between outputs and VCC line and the 50pF load
capacitor should be connected between outputs
and GND line.
All inputs except G input should be connected to
VCC or GND line such that outputs will be in low
logic level while G input is held low.
tPHZ, tPZH
The 1K
load resistors and the 50pF load
capacitors should be connected between each
output and GND line.
All inputs except G input should be connected to
VCC or GND line such that outputs will be in low
logic level while G input is held low.
WAVEFORM 9 : OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle)
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