74VCX162245 Low Voltage 16-Bit Bidirectional Transceiver with 3.6V Tolerant Inputs and Outputs and 26: Series
Resistors in A Port Outputs
October 1996
Revised June 2005
74VCX162245
Low Voltage 16-Bit Bidirectional Transceiver
with 3.6V Tolerant Inputs and Outputs
and 26: Series Resistors in A Port Outputs
General Description
The VCX162245 contains sixteen non-inverting bidirec-
tional buffers with 3-STATE outputs and is intended for bus
oriented applications. The device is byte controlled. Each
byte has separate 3-STATE control inputs which can be
shorted together for full 16-bit operation. The T/R inputs
determine the direction of data flow through the device.
The OE inputs disable both the A and B ports by placing
them in a high impedance state.
The 74VCX162245 is designed for low voltage (1.4V to
3.6V) V
CC
applications with I/O compatibility up to 3.6V.
The 74VCX162245 is also designed with 26
:
series resis-
tance in the A Port outputs. This design reduces line noise
in applications such as memory address drivers, clock driv-
ers, and bus transceivers/transmitters.
The 74VCX162245 is fabricated with an advanced CMOS
technology to achieve high speed operation while maintain-
ing low CMOS power dissipation.
Features
s
1.4V to 3.6V V
CC
supply operation
s
3.6V tolerant inputs and outputs
s
26
:
series resistors in A port outputs
s
t
PD
(B to A)
3.4 ns max for 3.0V to 3.6V V
CC
s
Power-down high impedance inputs and outputs
s
Supports live insertion/withdrawal (Note 1)
s
Static Drive (I
OH
/I
OL
A outputs)
r
12 mA @ 3.0V V
CC
s
Uses proprietary noise/EMI reduction circuitry
s
Latchup performance exceeds 300 mA
s
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 pull-up resistor; the minimum
value of the resistor is determined by the current-sourcing capability of the
driver.
Ordering Code:
Order Number
74VCX162245MTD
Package Number
MTD48
Package Description
48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
Pin Descriptions
Pin
Description
Names
OE
n
T/R
n
A
0
–A
15
B
0
–B
15
Output Enable Input
Transmit/Receive Input
Side A Inputs or 3-STATE Outputs
Side B Inputs or 3-STATE Outputs
© 2005 Fairchild Semiconductor Corporation
DS500048
www.fairchildsemi.com
74VCX162245
Absolute Maximum Ratings
(Note 2)
Supply Voltage (V
CC
)
DC Input Voltage (V
I
)
Output Voltage (V
O
)
Outputs 3-State
Outputs Active (Note 3)
DC Input Diode Current (I
IK
) V
I
0V
DC Output Diode Current (I
OK
)
V
O
0V
V
O
!
V
CC
DC Output Source/Sink Current
(I
OH
/I
OL
)
DC V
CC
or Ground Current per
Supply Pin (I
CC
or Ground)
Storage Temperature Range (T
STG
)
0.5V to
4.6V
0.5V to
4.6V
0.5V to
4.6V
0.5 to V
CC
0.5V
50 mA
50 mA
50 mA
r
50 mA
r
100 mA
65
q
C to
150
q
C
Recommended Operating
Conditions
(Note 4)
Power Supply
Operating
Data Retention Only
Input Voltage
Output Voltage (V
O
)
Output in Active States
Output in 3-STATE
Output Current in I
OH
/I
OL
-A Outputs
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
3.0V to 3.6V
2.3V to 2.7V
1.65V to 1.95V
3.0V to 3.6V
2.3V to 2.7V
1.65V to 2.3V
0V to V
CC
0.0V to 3.6V
1.4V to 3.6V
1.2V to 3.6V
0.3V to 3.6V
r
12 mA
r
8 mA
r
3 mA
r
24mA
r
18mA
r
6mA
40
q
C to
85
q
C
10 ns/V
Output Current in
r
I
OH
/I
OL
-B Outputs
Free Air Operating Temperature (T
A
)
Minimum Input Edge Rate (
'
t/
'
V)
V
IN
0.8V to 2.0V, V
CC
3.0V
Note 2:
The “Absolute Maximum Ratings” are those values beyond which
the safety of the device cannot be guaranteed. The device should not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables are not guaranteed at the Absolute Maximum Rat-
ings. The Recommended Operating Conditions tables will define the condi-
tions for actual device operation.
Note 3:
I
O
Absolute Maximum Rating must be observed.
Note 4:
Floating or unused pins (inputs or I/O's) must be held HIGH or
LOW.
DC Electrical Characteristics
Symbol
V
IH
Parameter
HIGH Level Input Voltage
Conditions
V
CC
(V)
2.7 - 3.6
2.3 - 2.7
1.65 - 2.3
1.4 - 1.6
V
IL
LOW Level Input Voltage
2.7 - 3.6
2.3 - 2.7
1.65 - 2.3
1.4 - 1.6
V
OH
HIGH Level Output Voltage
A Outputs
I
OH
I
OH
I
OH
I
OH
I
OH
I
OH
I
OH
I
OH
I
OH
I
OH
I
OH
I
OH
Min
2.0
1.6
0.65 x V
CC
0.65 x V
CC
0.8
0.7
0.35 x V
CC
0.35 x V
CC
V
CC
- 0.2
2.2
2.4
2.2
V
CC
- 0.2
2.0
1.8
1.7
V
CC
- 0.2
1.4
V
CC
- 0.2
1.05
V
V
V
Max
Units
100
P
A
6 mA
8 mA
12 mA
100
P
A
4 mA
6 mA
8 mA
100
P
A
3 mA
100
P
A
1 mA
2.7 - 3.6
2.7
3.0
3.0
2.3 - 2.7
2.3
2.3
2.3
1.65 - 2.3
.65
1.4 - 1.6
1.4
3
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