74LVX3245 8-Bit Dual Supply Translating Transceiver with 3-STATE Outputs
July 1993
Revised July 1999
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鈥?Wide
24-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150鈥?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 鈥淴鈥?to the ordering code.
Logic Symbol
Connection Diagram
Pin Descriptions
Pin Names
OE
T/R
A
0
鈥揂
7
B
0
鈥揃
7
Description
Output Enable Input
Transmit/Receive Input
Side A Inputs or 3-STATE Outputs
Side B Inputs or 3-STATE Outputs
漏 1999 Fairchild Semiconductor Corporation
DS011620
www.fairchildsemi.com
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