參數(shù)資料
型號(hào): MC74F1245J
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, CDIP20
封裝: 732-03
文件頁(yè)數(shù): 1/3頁(yè)
文件大?。?/td> 79K
代理商: MC74F1245J
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
相關(guān)PDF資料
PDF描述
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