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MC74F1245 Datasheet(PDF) 1 Page - Motorola, Inc

Part No. MC74F1245
Description  OCTAL BIDIRECTIONAL TRANSCEIVER WITH 3-STATE INPUTS/OUTPUTS
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Maker  MOTOROLA [Motorola, Inc]
Homepage  http://www.freescale.com
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MC74F1245 Datasheet(HTML) 1 Page - Motorola, Inc

   
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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
LOGIC SYMBOL
18
17
16
15
14
13
1
2
3
4
5
6
7
20
19
8
VCC
T/R
OE
B0
B1
B2
B4
B3
B5
A0
A1
A2
A3
A4
A5
A6
9
10
A7 GND
12
11
B6
B7
T/R
A0 A1 A2 A3 A4 A5 A6 A7
B0 B1 B2 B3 B4 B5 B6 B7
OE
2
3
4
5
6
7
8
9
19
1
18 17
16 15 14 13 12 11
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min
Typ
Max
Unit
VCC
DC Supply Voltage
74
4.5
5.0
5.5
V
TA
Operating Ambient Temperature Range
74
0
25
70
°C
IOH
Output Current
 High
An Outputs
74
–3.0
mA
IOL
Output Current
 Low
An Outputs
74
24
mA
IOH
Output Current
 High
Bn Outputs
74
–15
mA
IOL
Output Current
 Low
Bn Outputs
74
64
mA
MC74F1245
OCTAL BIDIRECTIONAL
TRANSCEIVER WITH 3-STATE
INPUTS/OUTPUTS
FAST
™ SCHOTTKY TTL
ORDERING INFORMATION
MC74FXXXXJ
Ceramic
MC74FXXXXN
Plastic
MC74FXXXXDW SOIC
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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