MC74F1245N Ver la hoja de datos (PDF) - Motorola => Freescale
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MC74F1245N Datasheet PDF : 3 Pages
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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
VCC OE B0 B1 B2 B3 B4 B5 B6 B7
20 19 18 17 16 15 14 13 12 11
MC74F1245
OCTAL BIDIRECTIONAL
TRANSCEIVER WITH 3-STATE
INPUTS/OUTPUTS
FAST™ SCHOTTKY TTL
20
1
20
1
J SUFFIX
CERAMIC
CASE 732-03
N SUFFIX
PLASTIC
CASE 738-03
1 2 3 4 5 6 7 8 9 10
T/R A0 A1 A2 A3 A4 A5 A6 A7 GND
LOGIC SYMBOL
2 3 45 6 7 89
A0 A1 A2 A3 A4 A5 A6 A7
19
OE
1
T/R
B0 B1 B2 B3 B4 B5 B6 B7
18 17 16 15 14 13 12 11
GUARANTEED OPERATING RANGES
Symbol
Parameter
VCC
TA
IOH
IOL
IOH
IOL
DC Supply Voltage
Operating Ambient Temperature Range
Output Current High
Output Current Low
Output Current High
Output Current Low
An Outputs
An Outputs
Bn Outputs
Bn Outputs
20
1
DW SUFFIX
SOIC
CASE 751D-03
ORDERING INFORMATION
MC74FXXXXJ Ceramic
MC74FXXXXN Plastic
MC74FXXXXDW SOIC
Min
Typ
Max
Unit
74
4.5
5.0
5.5
V
74
0
25
70
°C
74
—
—
–3.0
mA
74
—
—
24
mA
74
—
—
–15
mA
74
—
—
64
mA
FAST AND LS TTL DATA
4-264
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