74ALVC2245
器件描述：Low Voltage Bidirectional Transceiver with 3.6V Tolerant Inputs and Outputs and 26з Series Resistors in B Outputs
器件厂商：FAIRCHILD [Fairchild Semiconductor]
文件大小：85.12KB，共7页
Sponsor by e络盟器件资料摘要：
© 2002 Fairchild Semiconductor Corporation ds500717 www.fairchildsemi.com
February 2002
Revised February 2002
7
4
AL
VC2245
Low
V
o
l
t
ag
e Bi
dir
ecti
onal
T
r
anscei
ver
wit
h
3.
6V T
o
l
e
rant
Input
s an
d Outp
uts
and
26
Ω
Seri
es
Res
i
st
ors in B
Out
puts
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
a73 1.65V to 3.6V V
CC
supply operation
a73 3.6V tolerant inputs and outputs
a73 26Ω series resistors in B Port outputs
a73 Power-off high impedance inputs and outputs
a73 Supports Live Insertion and Withdrawal (Note 1)
a73 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
a73 Uses patented Quiet Series noise/EMI reduction
circuitry
a73 Latchup conforms to JEDEC JED78
a73 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:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol Pin Descriptions
Quiet Series is a trademark of Fairchild Semiconductor Corporation.
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
Pin Names Description
OE Output Enable Input (Active LOW)
T/R Transmit/Receive Input
A
0
–A
7
Side A Inputs or 3-STATE Outputs
B
0
–B
7
Side B Inputs or 3-STATE Outputs
February 2002
Revised February 2002
7
4
AL
VC2245
Low
V
o
l
t
ag
e Bi
dir
ecti
onal
T
r
anscei
ver
wit
h
3.
6V T
o
l
e
rant
Input
s an
d Outp
uts
and
26
Ω
Seri
es
Res
i
st
ors in B
Out
puts
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
a73 1.65V to 3.6V V
CC
supply operation
a73 3.6V tolerant inputs and outputs
a73 26Ω series resistors in B Port outputs
a73 Power-off high impedance inputs and outputs
a73 Supports Live Insertion and Withdrawal (Note 1)
a73 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
a73 Uses patented Quiet Series noise/EMI reduction
circuitry
a73 Latchup conforms to JEDEC JED78
a73 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:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol Pin Descriptions
Quiet Series is a trademark of Fairchild Semiconductor Corporation.
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
Pin Names Description
OE Output Enable Input (Active LOW)
T/R Transmit/Receive Input
A
0
–A
7
Side A Inputs or 3-STATE Outputs
B
0
–B
7
Side B Inputs or 3-STATE Outputs