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參數資料
| 型號： | MC74F657BN |
| 廠商： | MOTOROLA INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | OCTAL BIDIRECTIONAL TRANSCEIVER WITH 8-BIT PARITY GENERATOR CHECKER (3-STATE OUTPUTS) |
| 中文描述： | F/FAST SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDIP24 |
| 封裝： | 724-03 |
| 文件頁數： | 2/5頁 |
| 文件大小： | 135K |
| 代理商： | MC74F657BN |
4-248
FAST AND LS TTL DATA
MC74F657A, B
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min
Typ
Max
Unit
VCC
Supply Voltage
74
4.5
5.0
5.5
V
TA
Operating Ambient
Temperature Range
74
0
25
70
°
C
IOH
IOL
Output Current — High
74
–3.0/–15
mA
Output Current — Low
74
24/64
mA
FUNCTION TABLE
Number of
Inputs That are High
Inputs
Input/Output
Outputs
OE
T/R
Even/Odd
Parity
Error
Outputs Mode
L
L
L
L
L
L
H
H
L
L
L
L
H
L
H
H
L
L
H
L
H
L
H
L
Z
Z
H
L
L
H
Transmit
Transmit
Receive
Receive
Receive
Receive
0, 2, 4, 6, 8
Number of
Inputs That are High
Inputs
Input/Output
Outputs
OE
T/R
Even/Odd
Parity
Error
Outputs Mode
L
L
L
L
L
L
H
H
L
L
L
L
H
L
H
H
L
L
L
H
H
L
H
L
Z
Z
L
H
H
L
Transmit
Transmit
Receive
Receive
Receive
Receive
1, 3, 5, 7
Don’t Care
H
X
X
Z
Z
Z
H = HIGH Voltage Level; L = LOW Voltage Level; X = Don’t Care; Z = HIGH impedance state.
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