MC74LVX4245 Datasheet, PDF (1/9 Pages) Motorola, Inc – LOW-VOLTAGE CMOS

MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Dual Supply Octal
Translating Transceiver
with 3-State Outputs
The 74LVX4245 is a 24–pin dual–supply, octal translating transceiver
that is designed to interface between a 5V bus and a 3V bus in a mixed
3V/5V supply environment such as laptop computers using a 3.3V CPU
and 5V LCD display. The A port interfaces with the 5V bus; the B port
interfaces with the 3V bus.
The Transmit/Receive (T/R) input determines the direction of data flow.
Transmit (active–High) enables data from the A port to the B port.
Receive (active–Low) enables data from the B port to the A port. The
Output Enable (OE) input, when High, disables both A and B ports by
placing them in 3–State.
• Bi–directional Interface Between 5V and 3V Buses
• Control Inputs Compatible with TTL Level
• 5V Data Flow at A Port and 3V Data Flow at B Port
• Outputs Source/Sink 24mA at 5V Bus and 12mA at 3V Bus
• Guaranteed Simultaneous Switching Noise Level and Dynamic
Threshold Performance
• Available in SOIC and TSSOP Packages
• Functionally Compatible with the 74 Series 245
VCCB VCCB OE B0 B1 B2 B3 B4 B5 B6 B7 GND
24 23 22 21 20 19 18 17 16 15 14 13
MC74LVX4245
LVX
LOW–VOLTAGE CMOS
DW SUFFIX
24–LEAD PLASTIC SOIC PACKAGE
CASE 751E–04
DT SUFFIX
24–LEAD PLASTIC TSSOP PACKAGE
CASE 948H–01
1 2 3 4 5 6 7 8 9 10 11 12
VCCA T/R A0 A1 A2 A3 A4 A5 A6 A7 GND GND
Figure 1. 24–Lead Pinout
(Top View)
PIN NAMES
Pins
Function
OE
T/R
A0–A7
B0–B7
Output Enable Input
Transmit/Receive Input
Side A 3–State Inputs or 3–State
Outputs
Side B 3–State Inputs or 3–State
Outputs
7/97
© Motorola, Inc. 1997
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