參數(shù)資料
型號： HD74HC190
廠商： Hitachi,Ltd.
英文描述： Octal Buffers/Drivers With 3-State Outputs 20-CDIP -55 to 125
中文描述： 同步向上/向下十年,4 -位二進制計數(shù)器（單時鐘線）
文件頁數(shù)： 3/13頁
文件大?。?/td> 75K
代理商： HD74HC190
HD74HC190/HD74HC191
3
Timing Chart
HD74HC190
Illustrated below is the following sequence:
1. Load (preset) to BCD seven.
2. Count up to eight, nine (maximum), zero, one and two.
3. Inhibit
4. Count down to one, zero (minimum), nine, eight and seven.
Load
A
B
C
D
Clock
Down/Up
Enable G
Q
A
Q
B
Q
C
Q
D
Max/Min
Ripple
Clock
7
Load
8
9
0
1 2
2 2 1
0
9
8
7
Count Up
Inhibit
Count Down
相關(guān)PDF資料
PDF描述
HD74HC191 Synchronous Up/Down Decade,4-bit Binary Counter(Single Clock Line)
HD74HC192 Synchronous Up/Down Decade,4-bit Binary Counter(Dual Clock Line)
HD74HC193 Synchronous Up/Down Decade,4-bit Binary Counter(Dual Clock Line)
HD74HC194 4-bit Bidirectional Universal Shift Register
HD74HC195 4-bit Parallel-Access Shift Register
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD74HC190FP(E) 制造商:Renesas Electronics Corporation 功能描述:
HD74HC190P-E 制造商:Renesas Electronics 功能描述:74HC Counter
HD74HC192FP 制造商:Renesas Electronics 功能描述:74HC 4-Bit Binary Up / Down Counter with Preset 制造商:Renesas Electronics 功能描述:74HC 4-Bit Binary Up / Down Counter with Preset Bulk
HD74HC192FP-E 制造商:Renesas Electronics 功能描述:74HC 4-Bit Binary Up / Down Counter with Preset
HD74HC192P 制造商:Renesas Electronics 功能描述:74HC 4-Bit Binary Up / Down Counter with Preset Bulk
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