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74LVX3245 — 8-Bit Dual-Supply Translating Transceiver with 3-State Outputs
April 2016
74LVX3245
8-Bit, Dual-Supply Translating Transceiver with
3-State Outputs
Features
Bidirectional Interface Between 3 V and 5 V Buses
Inputs Compatible with TTL Level
3 V Data Flow at A-Port and 5 V Data Flow at B-
Port
Outputs Source / Sink: 24 mA
Guaranteed Simultaneous Switching Noise Level
and Dynamic Threshold Performance
Implements Proprietary EMI Reduction Circuitry
Functionally Compatible with the 74 Series 245
Description
The 74LVX3245 is a dual-supply, 8-bit translating
transceiver designed to interface between a 3 V bus and
a 5 V bus in a mixed 5 V supply environment. The
Transmit/ Receive (T/¯ ) input determines the direction
R
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 3 V bus; the B-port interfaces with the 5 V bus.
The 74LVX3245 is suitable for mixed-voltage
applications, such as notebook computers using 3.3 V
微控制器 MCU
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