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參數(shù)資料
| 型號(hào)： | MC74F1245DW |
| 廠商： | MOTOROLA INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | OCTAL BIDIRECTIONAL TRANSCEIVER WITH 3-STATE INPUTS/OUTPUTS |
| 中文描述： | F/FAST SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20 |
| 封裝： | SOIC-20 |
| 文件頁數(shù)： | 1/3頁 |
| 文件大?。?/td> | 79K |
| 代理商： | MC74F1245DW |
4-264
FAST AND LS TTL DATA
OCTAL BIDIRECTIONAL
TRANSCEIVER WITH 3-STATE
INPUTS/OUTPUTS
The MC74F1245 contains eight noninverting bidirectional buffers with
3-state outputs and is intended for bus-oriented applications. Current sinking
capability is 24 mA at the A ports and 64 mA at the B ports. The Transmit/
Receive (T/R) input determines the direction of data flow through the bidirec-
tional transceiver. Transmit (active HIGH) enables data from A ports to B
ports; Receive (active LOW) enables data from B ports to A ports. The Output
Enable input, when HIGH, disables both A and B ports by placing them in a
high-Z condition.
Noninverting Buffers
Bidirectional Data Path
B Outputs Sink 64 mA
High Impedance Inputs for Reduced Loading
Same Function and Pinout as the F245
ESD Protection > 4000 Volts
PIN ASSIGNMENT
B1
LOGIC SYMBOL
3
4
5
18
17
16
15
14
13
1
2
3
4
A2
5
6
7
A5
20
19
8
A6
VCC
T/R
OE
B0
B2
B4
B3
B5
A0
A1
A3
A4
9
10
GND
A7
12
11
B6
B7
T/R
A0
A1
A2A3A4A5A6A7
B0B1
B2
B3B4
B5B6
B7
OE
2
6
7
8
9
19
1
18 17
16 15 14
13 12 11
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min
Typ
Max
Unit
VCC
TA
IOH
IOL
IOH
IOL
DC Supply Voltage
74
4.5
5.0
5.5
V
Operating Ambient Temperature Range
74
0
25
70
°
C
Output Current
High
An Outputs
An Outputs
Bn Outputs
Bn Outputs
74
—
—
–3.0
mA
Output Current
Low
74
—
—
24
mA
Output Current
High
74
—
—
–15
mA
Output Current
Low
74
—
—
64
mA
MC74F1245
OCTAL BIDIRECTIONAL
TRANSCEIVER WITH 3-STATE
INPUTS/OUTPUTS
FAST
SCHOTTKY TTL
ORDERING INFORMATION
MC74FXXXXJ
MC74FXXXXN
MC74FXXXXDW SOIC
Ceramic
Plastic
20
1
J SUFFIX
CERAMIC
CASE 732-03
20
1
N SUFFIX
PLASTIC
CASE 738-03
20
1
DW SUFFIX
SOIC
CASE 751D-03
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