74LCXH2245 Datasheet, PDF (1/11 Pages) Fairchild Semiconductor – Low Voltage Bidirectional Transceiver with Bushold and 26Ω Series Resistors in B Outputs

October 2000
Revised September 2001
74LCXH2245
Low Voltage Bidirectional Transceiver with Bushold
and 26Ω Series Resistors in B Outputs
General Description
The LCXH2245 contains eight non-inverting bidirectional
buffers with 3-STATE outputs and is intended for bus ori-
ented applications. The device is designed for low voltage
(2.5V and 3.3V) V_CC applications. The T/R input deter-
mines 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 in the B Port
output helps reduce output overshoot and undershoot.
The LCXH2245 is fabricated with an advanced CMOS
technology to achieve high speed operation while maintain-
ing CMOS low power dissipation.
The LCXH2245 data inputs include active bushold circuitry,
eliminating the need for external pull-up resistors to hold
unused or floating data inputs at a valid logic level.
Features
s 5V tolerant control inputs
s 2.3V–3.6V V_CC specifications provided
s Bushold on inputs eliminates the need for external
pull-up/pull-down resistors
s 7.0 ns t_PD max (V_CC = 3.3V), 10 µA I_CC max
s Power down high impedance outputs
s ±12 mA output drive B Port (V_CC = 3.0V)
s Implements patented noise/EMI reduction circuitry
s Latch-up performance exceeds 500 mA
s Equivalent 26Ω series resistor on B Port outputs
s ESD performance:
Human body model > 2000V
Machine model > 200V
Ordering Code:
Order Number Package Number
Package Description
74LCXH2245WM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74LCXH2245SJ
M20D
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74LCXH2245MSA
MSA20
20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide
74LCXH2245MTC
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
Connection Diagram
Pin Descriptions
Pin Names
OE
T/R
A₀–A₇
B₀–B₇
Description
Output Enable Input
Transmit/Receive Input
Side A Inputs or 3-STATE Outputs (Bushold)
Side B Inputs or 3-STATE Outputs (Bushold)
GTO is a trademark of Fairchild Semiconductor Corporation.
© 2001 Fairchild Semiconductor Corporation DS500409
www.fairchildsemi.com