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参数资料
| 型号： | SN54LS293J |
| 厂商： | ON SEMICONDUCTOR |
| 元件分类： | 计数器 |
| 英文描述： | Octal D-Type Flip-Flop with 3-State Outputs; Package: 20 LEAD PDIP; No of Pins: 20; Container: Rail; Qty per Container: 18 |
| 中文描述： | LS SERIES, ASYN NEGATIVE EDGE TRIGGERED 3-BIT UP BINARY COUNTER, CDIP14 |
| 封装： | CERAMIC, DIP-14 |
| 文件页数： | 4/7页 |
| 文件大小： | 162K |
| 代理商： | SN54LS293J |
SN74LS290
http://onsemi.com
4
LS293 MODE SELECTION
RESET INPUTS
OUTPUTS
MR1
MR2
Q0
Q1
Q2
Q3
H
L
H
Count
H
L
Count
L
Count
TRUTH TABLE
COUNT
OUTPUT
Q0
Q1
Q2
Q3
0
L
1
H
LL
L
2
L
HL
L
3
H
HL
L
4
L
LH
L
5
H
LH
L
6
L
HH
L
7
H
HH
L
8
L
LL
H
9
H
LL
H
10
L
HL
H
11
H
HL
H
12
L
LH
H
13
H
LH
H
14
L
HH
H
15
H
Note: Output Q0 connected to input CP1.
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min
Typ
Max
Unit
VCC
Supply Voltage
54
74
4.5
4.75
5.0
5.5
5.25
V
TA
Operating Ambient Temperature Range
54
74
55
0
25
125
70
°C
IOH
Output Current — High
54, 74
0.4
mA
IOL
Output Current — Low
54
74
4.0
8.0
mA
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