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MC74F1245

Motorola
Part Number MC74F1245
Manufacturer Motorola
Description OCTAL BIDIRECTIONAL TRANSCEIVER WITH 3-STATE INPUTS/OUTPUTS
Published Nov 5, 2005
Detailed Description MC74F1245 OCTAL BIDIRECTIONAL TRANSCEIVER WITH 3-STATE INPUTS/OUTPUTS The MC74F1245 contains eight noninverting bidirect...
Datasheet PDF File MC74F1245 PDF File

MC74F1245
MC74F1245

Overview
MC74F1245 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 bidirectional 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 20 19 B0 18 B1 17 B2 16 B3 15 B4 14 B5 13 B6 12 B7 11 20 1 OCTAL BIDIRECTIONAL TRANSCEIVER WITH 3-STATE INPUTS/OUTPUTS FAST™ SCHOTTKY TTL 20 1 J SUFFIX CERAMIC CASE 732-03 N SUFFIX PLASTIC CASE 738-03 20 1 DW SUFFIX SOIC CASE 751D-03 1 T/R 2 A0 3 A1 4 A2 5 A3 6 A4 7 A5 8 A6 9 A7 10 GND LOGIC SYMBOL 2 3 4 5 6 7 8 9 ORDERING INFORMATION MC74FXXXXJ Ceramic MC74FXXXXN Plastic MC74FXXXXDW SOIC A0 A1 A2 A3 A4 A5 A6 A7 19 1 OE T/R B0 B1 B2 B3 B4 B5 B6 B7 18 17 16 15 14 13 12 11 GUARANTEED OPERATING RANGES Symbol VCC TA IOH IOL IOH IOL Parameter 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 74 74 74 74 74 74 Min 4.
5 0 — — — — Typ 5.
0 25 — — — — Max 5.
5 70 –3.
0 24 –15 64 Unit V °C mA mA mA mA FAST AND LS TTL DATA 4-264 MC74F1245 FUNCTION TABLE Inputs OE L L H T/R L H X An A=B Inputs Z Inputs/Outputs Bn Inputs B=A Z H = HIGH voltage level: L = LOW voltage level: X = Don’t care: Z = HIGH impedance “off” state.
LOGIC DIAGRAM A0 2 A1 3 A2 4 A3 5 A4 6 A5 7 A6 8 A7 9 VCC = PIN 20 GND = PIN 10 19 OE T/R 1 18 B0 17 ...


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