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參數(shù)資料
| 型號： | SN54HC193W |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 300mA, 3.3V ±1% Output Voltage, Low Dropout Voltage Regulator; Package: SOT-223 (TO-261) 4 LEAD; No of Pins: 4; Container: Tape and Reel; Qty per Container: 4000 |
| 中文描述： | 4位同步向上/向下計數(shù)器雙時鐘清除 |
| 文件頁數(shù)： | 4/9頁 |
| 文件大小： | 143K |
| 代理商： | SN54HC193W |
SN54HC193, SN74HC193
4-BIT SYNCHRONOUS UP/DOWN COUNTERS
(DUAL CLOCK WITH CLEAR)
SCLS122B – DECEMBER 1982 – REVISED MAY 1997
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
typical clear, load, and count sequence
The following sequence is illustrated below:
1.
Clear outputs to 0
2.
Load (preset) to binary 13
3.
Count up to 14, 15, carry, 0, 1, and 2
4.
Count down to 1, 0, borrow, 15, 14, and 13
Data
Inputs
Data
Outputs
LOAD
A
B
C
D
UP
CO
QA
QB
QC
QD
Clear
Count Up
0
13
14
0
1
2
BO
Count Down
15
14
13
DOWN
CLR
15
1
0
Preset
NOTES: A. CLR overrides LOAD, data, and count inputs.
B. When counting up, count-down input must be high; when counting down, count-up input must be high.
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