Product Summary

OCTAL BUS TRANSCEIVER AND 3.3-V TO 5-V SHIFTER WITH 3-STATE OUTPUTS 

This 8-bit (octal) noninverting bus transceiver contains two separate supply rails; B port has VCCB, which is set at 3.3 V, and A port has VCCA, which is set at 5 V. This allows for translation from a 3.3-V to
a 5-V environment, and vice versa.
The SN74LVC4245A is designed for asynchronous communication between data buses. The device transmits data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the device so the buses are effectively isolated. The control circuitry (DIR, OE) is powered by VCCA.
The SN74LVC4245A pinout allows the designer to switch to a normal all-3.3-V or all-5-V 20-pin ''''245 device without board re-layout. The designer uses the data paths for pins 2–11 and 14–23 of the SN74LVC4245A to align with the conventional ''''245 pinout.
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Parametrics

 

Features

Bidirectional Voltage Translator
5.5 V on A Port and 2.7 V to 3.6 V on B Port
Control Inputs VIH/VIL Levels Are Referenced to VCCA Voltage
Latch-Up Performance Exceeds 250 mA Per JESD 17
ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)

Diagrams

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
SN74LVC4245APWR
SN74LVC4245APWR
Texas Instruments
Bus Transceivers Octal Tri-St Shifter
Data Sheet
0-1: $0.43
1-25: $0.40
25-100: $0.32
100-250: $0.28
SN74LVC4245APWRE4
SN74LVC4245APWRE4
Texas Instruments
Bus Transceivers Octal FET Bus Switch
Data Sheet
0-1: $0.54
1-25: $0.45
25-100: $0.36
100-250: $0.27
SN74LVC4245APWRG4
SN74LVC4245APWRG4
Texas Instruments
Bus Transceivers Octal FET Bus Switch
Data Sheet
0-1: $0.54
1-25: $0.45
25-100: $0.36
100-250: $0.27