74VCX162835
器件描述：Low Voltage 18-Bit Universal Bus Driver with 3.6V Tolerant Inputs/Outputs and 26з Series Resistors in Outputs
器件厂商：FAIRCHILD [Fairchild Semiconductor]
文件大小：77.73KB，共8页
Sponsor by e络盟器件资料摘要：
© 2000 Fairchild Semiconductor Corporation DS500181 www.fairchildsemi.com
October 1998
Revised April 2000
7
4
VC
X16
2835
L
o
w
V
o
lt
age 18-Bi
t Univer
sal
Bus Dri
ver w
i
th
3.
6V
T
o
l
e
rant
I
nput
s/Out
puts and 26
Ω
Ser
i
es
Res
i
st
ors in Output
s
74VCX162835
Low Voltage 18-Bit Universal Bus Driver with
3.6V Tolerant Inputs/Outputs
and 26Ω Series Resistors in Outputs
General Description
The VCX162835 low voltage 18-bit universal bus driver
combines D-type latches and D-type flip-flops to allow data
flow in transparent, latched and clocked modes.
Data flow is controlled by output-enable (OE), latch-enable
(LE), and clock (CLK) inputs. The device operates in
Transparent Mode when LE is held HIGH. The device
operates in clocked mode when LE is LOW and CLK is tog-
gled. Data transfers from the Inputs (I
n
) to Outputs (O
n
) on
a Positive Edge Transition of the Clock. When OE is LOW,
the output data is enabled. When OE is HIGH the output
port is in a high impedance state.
The VCX162835 is designed with 26Ω series resistors in
the outputs. This design reduces noise in applications such
as memory address drivers, clock drivers, and bus trans-
ceivers/transmitters.
The 74VCX162835 is designed for low voltage (1.65V to
3.6V) V
CC
applications with I/O capability up to 3.6V.
The 74VCX162835 is fabricated with an advanced CMOS
technology to achieve high speed operation while maintain-
ing low CMOS power dissipation.
Features
a73 Compatible with PC100 DIMM module specifications
a73 1.65V–3.6V V
CC
specifications provided
a73 3.6V tolerant inputs and outputs
a73 26Ω series resistors in outputs
a73 t
PD
(CP to O
n
)
4.2ns max for 3.0V to 3.6V V
CC
5.2ns max for 2.3V to 2.7V V
CC
9.2ns max for 1.65V to 1.95V V
CC
a73 Power-down high impedance inputs and outputs
a73 Supports live insertion/withdrawal (Note 1)
a73 Static Drive (I
OH
/I
OL
)
±12mA @ 3.0V V
CC
±8 mA @ 2.3V V
CC
±3 mA @ 1.65V V
CC
a73 Latchup performance exceeds 300 mA
a73 ESD performance:
Human body model > 2000V
Machine model >200V
Note 1: To ensure the high impedance state during power up or power
down, OE should be tied to V
CC
through a pulldown 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.
Order Number Package Number Package Description
74VCX162835MTD MTD56 56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
October 1998
Revised April 2000
7
4
VC
X16
2835
L
o
w
V
o
lt
age 18-Bi
t Univer
sal
Bus Dri
ver w
i
th
3.
6V
T
o
l
e
rant
I
nput
s/Out
puts and 26
Ω
Ser
i
es
Res
i
st
ors in Output
s
74VCX162835
Low Voltage 18-Bit Universal Bus Driver with
3.6V Tolerant Inputs/Outputs
and 26Ω Series Resistors in Outputs
General Description
The VCX162835 low voltage 18-bit universal bus driver
combines D-type latches and D-type flip-flops to allow data
flow in transparent, latched and clocked modes.
Data flow is controlled by output-enable (OE), latch-enable
(LE), and clock (CLK) inputs. The device operates in
Transparent Mode when LE is held HIGH. The device
operates in clocked mode when LE is LOW and CLK is tog-
gled. Data transfers from the Inputs (I
n
) to Outputs (O
n
) on
a Positive Edge Transition of the Clock. When OE is LOW,
the output data is enabled. When OE is HIGH the output
port is in a high impedance state.
The VCX162835 is designed with 26Ω series resistors in
the outputs. This design reduces noise in applications such
as memory address drivers, clock drivers, and bus trans-
ceivers/transmitters.
The 74VCX162835 is designed for low voltage (1.65V to
3.6V) V
CC
applications with I/O capability up to 3.6V.
The 74VCX162835 is fabricated with an advanced CMOS
technology to achieve high speed operation while maintain-
ing low CMOS power dissipation.
Features
a73 Compatible with PC100 DIMM module specifications
a73 1.65V–3.6V V
CC
specifications provided
a73 3.6V tolerant inputs and outputs
a73 26Ω series resistors in outputs
a73 t
PD
(CP to O
n
)
4.2ns max for 3.0V to 3.6V V
CC
5.2ns max for 2.3V to 2.7V V
CC
9.2ns max for 1.65V to 1.95V V
CC
a73 Power-down high impedance inputs and outputs
a73 Supports live insertion/withdrawal (Note 1)
a73 Static Drive (I
OH
/I
OL
)
±12mA @ 3.0V V
CC
±8 mA @ 2.3V V
CC
±3 mA @ 1.65V V
CC
a73 Latchup performance exceeds 300 mA
a73 ESD performance:
Human body model > 2000V
Machine model >200V
Note 1: To ensure the high impedance state during power up or power
down, OE should be tied to V
CC
through a pulldown 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.
Order Number Package Number Package Description
74VCX162835MTD MTD56 56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide