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參數(shù)資料
| 型號： | M54HC191 |
| 廠商： | 意法半導體 |
| 元件分類： | 通用總線功能 |
| 英文描述： | 4 Bit Synchronous Up/Down Counters(4位同步加/減計數(shù)器) |
| 中文描述： | 4位同步加/減計數(shù)器（4位同步加/減計數(shù)器） |
| 文件頁數(shù)： | 2/14頁 |
| 文件大?。?/td> | 298K |
| 代理商： | M54HC191 |
INPUT AND OUTPUT EQUIVALENT CIRCUIT
TRUTH TABLE
INPUTS
OUTPUS
QB
b
UP COUNT
DOWN COUNT
NO CHANGE
NO CHANGE
FUNCTION
LOAD
L
H
H
H
H
X: Don’t Care
a -d: Thelevel of steadystate inputs atinputs a through Drespectively
ENABLE
X
L
L
H
X
D/U
X
L
H
X
X
CLOCK
X
QA
a
QC
c
QD
d
PRESET DATA
UP COUNT
DOWN COUNT
NO COUNT
NO COUNT
PIN DESCRIPTION
PIN No
3, 2, 6, 7
4
SYMBOL
QA to QD
ENABLE
NAME AND FUNCTION
Flip-Flop Outputs
Count Enable Input
(Active LOW)
Parallel Data Input
Load Input (Active LOW)
Terminal Count Output
Ripple Clock Output
(Active LOW)
Cloack Input (LOW to
HIGH, Edge-triggered)
Data Inputs
Ground (0V)
Positive Supply Voltage
5
U/D
LOAD
MA/MI OUT
RC
11
12
13
14
CLOCK
15, 1, 10, 9
8
16
DA to DD
GND
V
CC
IEC LOGIC SYMBOL
(HC191)
IEC LOGIC SYMBOL
(HC190)
M54/M74HC190/191
2/14
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M54HC193 | RAD-HARD SYNCHRONOUS UP/DOWN BINARY COUNTER |
| M54HC193D | RAD-HARD SYNCHRONOUS UP/DOWN BINARY COUNTER |
| M54HC193D1 | RAD-HARD SYNCHRONOUS UP/DOWN BINARY COUNTER |
| M54HC193K | RAD-HARD SYNCHRONOUS UP/DOWN BINARY COUNTER |
| M54HC193K1 | RAD-HARD SYNCHRONOUS UP/DOWN BINARY COUNTER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M54HC191_04 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:RAD-HARD 4 BIT SYNCHRONOUS UP/DOWN COUNTERS |
| M54HC191B1R | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:4 BIT SYNCHRONOUS UP/DOWN COUNTERS |
| M54HC191C1R | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:4 BIT SYNCHRONOUS UP/DOWN COUNTERS |
| M54HC191D | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:RAD-HARD 4 BIT SYNCHRONOUS UP/DOWN COUNTERS |
| M54HC191D1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:RAD-HARD 4 BIT SYNCHRONOUS UP/DOWN COUNTERS |
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