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74LCXR2245 — Low Voltage Bidirectional Transceiver with 5V Tolerant Inputs and Outputs and 26
Ω
Series Resistors
on Both A and B Ports
March 2008
74LCXR2245
Low Voltage Bidirectional Transceiver with 5V Tolerant Inputs
and Outputs and 26
Ω
Series Resistors on Both A and B Ports
Features
■
5V tolerant inputs and outputs
■
2.3V–3.6V V
CC
specifications provided
■
8.0ns t
PD
max. (V
CC
=
3.3V), 10µA I
CC
max.
■
Power down high impedance inputs and outputs
■
Supports live insertion/withdrawal
(1)
■
±12mA output drive (V
CC
=
3.0V)
■
Implements
proprietary
noise/EMI reduction circuitry
■
Latch-up performance exceeds 500mA
■
Equivalent 26
Ω
series resistor on all outputs
■
ESD performance:
General Description
The LCXR2245 contains eight non-inverting bidirectional
buffers with 3-STATE outputs and is intended for bus ori-
ented applications. The device is designed for low volt-
age (2.5V and 3.3V) V
CC
applications with capability of
interfacing to a 5V signal environment. The T/R input
determines the direction of data flow through the device.
The OE input disables both the A and B ports by placing
them in a high impedance state. The 26Ω series resistor
helps reduce output overshoot and undershoot.
The LCXR2245 is fabricated with an advanced CMOS
technology to achieve high speed operation while main-
taining CMOS low power dissipation.
– Human body model
>
2000V
– Machine model
>
200V
Note:
1. To ensure the high-impedance state during power up
or down, OE should be tied to V
CC
through a pull-up
resistor: the minimum value or the resistor is
determined by the current-sourcing capability of the
driver.
Ordering Information
Order Number
74LCXR2245WM
74LCXR2245SJ
74LCXR2245MSA
74LCXR2245MTC
Package
Number
M20B
M20D
MSA20
MTC20
Package Description
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153,
4.4mm Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering number.
All packages are lead free per JEDEC: J-STD-020B standard.
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