74ALVC2245 Datasheet, PDF (1/7 Pages) Fairchild Semiconductor – Low Voltage Bidirectional Transceiver with 3.6V Tolerant Inputs and Outputs and 26Ω Series Resistors in B Outputs

February 2002
Revised February 2002
74ALVC2245
Low Voltage Bidirectional Transceiver
with 3.6V Tolerant Inputs and Outputs
and 26Ω Series Resistors in B Outputs
General Description
The ALVC2245 contains eight non-inverting bidirectional
buffers with 3-STATE outputs and is intended for bus ori-
ented applications. The T/R input determines the direction
of data flow. The OE input disables both the A and B ports
by placing them in a high impedance state.
The 74ALVC2245 is designed for low voltage (1.65V to
3.6V) V_CC applications with I/O compatibility up to 3.6V.
The ALVC2245 is also designed with 26Ω series resistance
in the B Port outputs. This design reduces line noise in
applications such as memory address drivers, clock driv-
ers, and bus transceivers transmitters
The 74ALVC2245 is fabricated with an advanced CMOS
technology to achieve high-speed operation while main-
taining low CMOS power dissipation.
Features
s 1.65V to 3.6V V_CC supply operation
s 3.6V tolerant inputs and outputs
s 26Ω series resistors in B Port outputs
s Power-off high impedance inputs and outputs
s Supports Live Insertion and Withdrawal (Note 1)
s t_PD (A to B)
4.9 ns max for 3.0V to 3.6V V_CC
6.1 ns max for 2.3V to 2.7V V_CC
9.8 ns max for 1.65V to 1.95V V_CC
s Uses patented Quiet Series noise/EMI reduction
circuitry
s Latchup conforms to JEDEC JED78
s ESD performance:
Human body model > 2000V
Machine model > 200V
Note 1: To ensure the high impedance state during power up and power
down, OE_n should be tied to V_CC through a pull up resistor. The minimum
value of the resistor is determined by the current sourcing capability of the
driver.
Ordering Code:
Order Number Package Number
Package Description
74ALVC2245WM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74ALVC2245MTC
MTC20
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
Pin Descriptions
Pin Names
Description
OE
T/R
A₀–A₇
B₀–B₇
Output Enable Input (Active LOW)
Transmit/Receive Input
Side A Inputs or 3-STATE Outputs
Side B Inputs or 3-STATE Outputs
Quiet Series is a trademark of Fairchild Semiconductor Corporation.
© 2002 Fairchild Semiconductor Corporation ds500717
www.fairchildsemi.com