74LVX3245

74LVX3245 8-Bit Dual Supply Translating Transceiver with 3-STATE Outputs

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74LVX3245 8-Bit Dual Supply Translating Transceiver with 3-STATE Outputs

July 1993 Revised September 2003

74LVX3245 8-Bit Dual Supply Translating Transceiver with 3-STATE Outputs
General Description
The LVX3245 is a dual-supply, 8-bit translating transceiver that is designed to interface between a 3V bus and a 5V bus in a mixed 3V/5V supply environment. The Transmit/ Receive (T/R) input determines the direction of data flow. 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 impedance condition. The A Port interfaces with the 3V bus; the B Port interfaces with the 5V bus. The LVX3245 is suitable for mixed voltage applications such as notebook computers using 3.3V CPU and 5V peripheral components.

Features
s Bidirectional interface between 3V and 5V buses s Inputs compatible with TTL level s 3V data flow at A Port and 5V data flow at B Port s Outputs source/sink 24 mA s Guaranteed simultaneous switching noise level and dynamic threshold performance s Implements proprietary EMI reduction circuitry s Functionally compatible with the 74 series 245

Ordering Code:
Order Number 74LVX3245WM 74LVX3245QSC 74LVX3245MTC Package Number M24B MQA24 MTC24 Package Description 24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide 24-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150" Wide 24-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

Devices also available in Tape and Reel. Specify by appending suffix letter "X" to the ordering code.

Logic Symbol

Connection Diagram

Pin Descriptions
Pin Names OE T/R A0 A7 B0 B7 Description Output Enable Input Transmit/Receive Input Side A Inputs or 3-STATE Outputs Side B Inputs or 3-STATE Outputs

2003 Fairchild Semiconductor Corporation

DS011620

www.fairchildsemi.com