74VCX245
器件描述：Low Voltage Bidirectional Transceiver with 3.6V Tolerant Inputs and Outputs
器件厂商：FAIRCHILD [Fairchild Semiconductor]
文件大小：80.62KB，共8页
Sponsor by e络盟器件资料摘要：
© 2005 Fairchild Semiconductor Corporation DS500167 www.fairchildsemi.com
June 1999
Revised April 2005
7
4
VC
X24
5
Low V
o
l
t
age Bidi
rect
i
onal T
r
ans
ceiver
wi
th 3.6
V
T
o
le
rant
I
nput
s and
Out
put
s
74VCX245
Low Voltage Bidirectional Transceiver
with 3.6V Tolerant Inputs and Outputs
General Description
The VCX245 contains eight non-inverting bidirectional buff-
ers with 3-STATE outputs and is intended for bus oriented
applications. The T/R input determines the direction of data
flow. The OE input disables both the A and B ports by plac-
ing them in a high impedance state.
The 74VCX245 is designed for low voltage (1.4V to 3.6V)
V
CC
applications with I/O compatibility up to 3.6V.
The 74VCX245 is fabricated with an advanced CMOS
technology to achieve high-speed operation while main-
taining low CMOS power dissipation.
Features
a73 1.4V to 3.6V V
CC
supply operation
a73 3.6V tolerant inputs and outputs
a73 Power-off high impedance inputs and outputs
a73 Supports Live Insertion and Withdrawal (Note 1)
a73 t
PD
3.5 ns max for 3.0V to 3.6V V
CC
a73 Static Drive (I
OH
/I
OL
)
c11424 mA @ 3.0V V
CC
a73 Uses patented noise/EMI reduction
circuitry
a73 Latchup performance exceeds 300 mA
a73 ESD performance:
Human body model c33 2000V
Machine model c33 200V
a73 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:
Pb-Free package per JEDEC J-STD-020B.
Note 2: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Note 3: DQFN package available in Tape and Reel only,
Logic Symbol Pin Descriptions
Order Number
Package
Number
Package Description
74VCX245WM
(Note 2)
M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74VCX245BQX
(Note 3)
MLP020B Pb-Free 20-Terminal Depopulated Quad Very-Thin Flat Pack No Leads (DQFN), JEDEC
MO-241, 2.5 x 4.5mm
74VCX245MTC
(Note 2)
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
June 1999
Revised April 2005
7
4
VC
X24
5
Low V
o
l
t
age Bidi
rect
i
onal T
r
ans
ceiver
wi
th 3.6
V
T
o
le
rant
I
nput
s and
Out
put
s
74VCX245
Low Voltage Bidirectional Transceiver
with 3.6V Tolerant Inputs and Outputs
General Description
The VCX245 contains eight non-inverting bidirectional buff-
ers with 3-STATE outputs and is intended for bus oriented
applications. The T/R input determines the direction of data
flow. The OE input disables both the A and B ports by plac-
ing them in a high impedance state.
The 74VCX245 is designed for low voltage (1.4V to 3.6V)
V
CC
applications with I/O compatibility up to 3.6V.
The 74VCX245 is fabricated with an advanced CMOS
technology to achieve high-speed operation while main-
taining low CMOS power dissipation.
Features
a73 1.4V to 3.6V V
CC
supply operation
a73 3.6V tolerant inputs and outputs
a73 Power-off high impedance inputs and outputs
a73 Supports Live Insertion and Withdrawal (Note 1)
a73 t
PD
3.5 ns max for 3.0V to 3.6V V
CC
a73 Static Drive (I
OH
/I
OL
)
c11424 mA @ 3.0V V
CC
a73 Uses patented noise/EMI reduction
circuitry
a73 Latchup performance exceeds 300 mA
a73 ESD performance:
Human body model c33 2000V
Machine model c33 200V
a73 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:
Pb-Free package per JEDEC J-STD-020B.
Note 2: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Note 3: DQFN package available in Tape and Reel only,
Logic Symbol Pin Descriptions
Order Number
Package
Number
Package Description
74VCX245WM
(Note 2)
M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74VCX245BQX
(Note 3)
MLP020B Pb-Free 20-Terminal Depopulated Quad Very-Thin Flat Pack No Leads (DQFN), JEDEC
MO-241, 2.5 x 4.5mm
74VCX245MTC
(Note 2)
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