74VCX2245 Low Voltage Bidirectional Transceiver with 3.6V Tolerant Inputs and Outputs and 26: Series
Resistors in B Outputs
June 1999
Revised April 2005
74VCX2245
Low Voltage Bidirectional Transceiver
with 3.6V Tolerant Inputs and Outputs
and 26: Series Resistors in B Outputs
General Description
The VCX2245 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 74VCX2245 is designed for low voltage (1.4V to 3.6V)
V
CC
applications with I/O compatibility up to 3.6V. The
VCX2245 is also designed with 26
:
series resistance in
the B Port outputs. This design reduces line noise in appli-
cations such as memory address drivers, clock drivers, and
bus transceivers transmitters
The 74VCX2245 is fabricated with an advanced CMOS
technology to achieve high-speed operation while main-
taining low CMOS power dissipation.
Features
s
1.4V - 3.6V V
CC
supply operation
s
3.6V tolerant inputs and outputs
s
26
:
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)
4.4 ns max for 3.0V to 3.6V V
CC
s
Static Drive (I
OH
/I
OL
B outputs):
r
12 mA @ 3.0V V
CC
s
Uses patented Quiet Series
樓
noise/EMI reduction
circuitry
s
Latchup performance exceeds JEDEC 78 conditions
s
ESD performance:
Human body model
!
2000V
Machine model
!
200V
s
Leadless DQFN Pb-Free package
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
74VCX2245WM
74VCX2245BQX
(Note 2)
74VCX2245MTC
Package
Number
M20B
MLP020B
MTC20
Package Description
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
Pb-Free 20-Terminal Depopulated Quad Very-Thin Flat Pack No Leads (DQFN), JEDEC
MO-241, 2.5 x 4.5mm
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 鈥淴鈥?to the ordering code.
Pb-Free package per JEDEC J-STD-020B.
Note 2:
DQFN package available in Tape and Reel only.
Logic Symbol
Pin Descriptions
Pin Names
OE
T/R
A
0
鈥揂
7
B
0
鈥揃
7
Description
Output Enable Input (Active LOW)
Transmit/Receive Input
Side A Inputs or 3-STATE Outputs
Side B Inputs or 3-STATE Outputs
Quiet Series
樓
is a trademark of Fairchild Semiconductor Corporation.
漏 2005 Fairchild Semiconductor Corporation
DS500170
www.fairchildsemi.com