2001 Fairchild Semiconductor Corporation
DS500679
www.fairchildsemi.com
October 2001
Revised November 2001
7
4
AL
VC1622
45
Low V
o
l
t
a
ge
16
-Bit
B
i
di
rect
ional
T
r
anscei
ver
wit
h
3.6V T
o
ler
a
nt In
puts and O
u
t
put
s
and 26
Seri
es
Resi
st
ors in A
Por
t
O
u
tput
s
74ALVC162245
Low Voltage 16-Bit Bidirectional Transceiver
with 3.6V Tolerant Inputs and Outputs
and 26
Series Resistors in A Port Outputs
General Description
The ALVC162245 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 74ALVC162245 is designed for low voltage (1.65V to
3.6V) V
CC
applications with I/O compatibility up to 3.6V.
The 74ALVC162245 is also designed with 26
series
resistance in the A Port outputs. This design reduces line
noise in applications such as memory address drivers,
clock drivers, and bus transceivers/transmitters.
The 74ALVC162245 is fabricated with an advanced CMOS
technology to achieve high speed operation while maintain-
ing low CMOS power dissipation.
Features
I
1.65V3.6V V
CC
supply operation
I
3.6V tolerant inputs and outputs
I
26
series resistors in A Port outputs
I
t
PD
3.9 ns max for 3.0V to 3.6V V
CC
4.8 ns max for 2.3V to 2.7V V
CC
8.6 ns max for 1.65V to 1.95V V
CC
I
Power-down high impedance inputs and outputs
I
Supports live insertion/withdrawal (Note 1)
I
Uses patented noise/EMI reduction circuitry
I
Latchup conforms to JEDEC JED78
I
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:
Devices also available in Tape and Reel. Specify by appending the suffix letter "X" to the ordering code.
Order Number
Package Number
Package Description
74ALVC162245T
MTD48
48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
www.fairchildsemi.com
2
74AL
VC162245
Connection Diagram
Logic Symbol
Pin Descriptions
Truth Tables
H
=
HIGH Voltage Level
L
=
LOW Voltage Level
X
=
Immaterial (HIGH or LOW, inputs and I/O's may not float)
Z
=
High Impedance
Logic Diagram
Pin Names
Description
OE
n
Output Enable Input (Active LOW)
T/R
n
Transmit/Receive Input
A
0
A
15
Side A Inputs or 3-STATE Outputs
B
0
B
15
Side B Inputs or 3-STATE Outputs
Inputs
Outputs
OE
1
T/R
1
L
L
Bus B
0
B
7
Data to Bus A
0
A
7
L
H
Bus A
0
A
7
Data to Bus B
0
B
7
H
X
HIGH Z State on A
0
A
7
, B
0
B
7
Inputs
Outputs
OE
2
T/R
2
L
L
Bus B
8
B
15
Data to Bus A
8
A
15
L
H
Bus A
8
A
15
Data to Bus B
8
B
15
H
X
HIGH Z State on A
8
A
15
, B
8
B
15
3
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7
4
AL
VC1622
45
Absolute Maximum Ratings
(Note 2)
Recommended Operating
Conditions
(Note 4)
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" table will define the condi-
tions for actual device operation.
Note 3: I
O
Absolute Maximum Rating must be observed.
Note 4: Floating or unused control inputs must be held HIGH or LOW.
DC Electrical Characteristics
Supply Voltage (V
CC
)
-
0.5V to
+
4.6V
DC Input Voltage (V
I
)
-
0.5V to 4.6V
Output Voltage (V
O
) (Note 3)
-
0.5V to V
CC
+
0.5V
DC Input Diode Current (I
IK
)
V
I
<
0V
-
50 mA
DC Output Diode Current (I
OK
)
V
O
<
0V
-
50 mA
DC Output Source/Sink Current
(I
OH
/I
OL
)
50 mA
DC V
CC
or GND Current per
Supply Pin (I
CC
or GND)
100 mA
Storage Temperature Range (T
STG
)
-
65
C to
+
150
C
Power Supply
Operating
1.65V to 3.6V
Input Voltage
0V to V
CC
Output Voltage (V
O
)
0V to V
CC
Free Air Operating Temperature (T
A
)
-
40
C to
+
85
C
Minimum Input Edge Rate (
t/
V)
V
IN
=
0.8V to 2.0V, V
CC
=
3.0V
10 ns/V
Symbol
Parameter
Conditions
V
CC
Min
Max
Units
(V)
V
IH
HIGH Level Input Voltage
1.65 - 1.95
0.65 x V
CC
V
2.3 - 2.7
1.7
2.7 - 3.6
2.0
V
IL
LOW Level Input Voltage
1.65 - 1.95
0.35 x V
CC
V
2.3 - 2.7
0.7
2.7 - 3.6
0.8
V
OH
HIGH Level Output Voltage
I
OH
=
-
100
A
1.65 - 3.6
V
CC
- 0.2
V
A Outputs
I
OH
=
-
2 mA
1.65
1.2
I
OH
=
-
4 mA
2.3
1.9
I
OH
=
-
6 mA
2.3
1.7
3.0
2.4
I
OH
=
-
8 mA
2.7
2
I
OH
=
-
12 mA
3.0
2
HIGH Level Output Voltage
I
OH
=
-
100
A
1.65 - 3.6
V
CC
- 0.2
B Outputs
I
OH
=
-
4 mA
1.65
1.2
I
OH
=
-
6 mA
2.3
2.0
I
OH
=
-
12 mA
2.3
1.7
2.7
2.2
3.0
2.4
I
OH
=
-
24 mA
3.0
2
V
OL
LOW Level Output Voltage
I
OL
=
100
A
1.65 - 3.6
0.2
V
A Outputs
I
OL
=
2 mA
1.65
0.45
I
OL
=
4 mA
2.3
0.4
I
OL
=
6 mA
2.3
0.55
3.0
0.55
I
OL
=
8 mA
2.7
0.6
I
OL
=
12 mA
3.0
0.8
LOW Level Output Voltage
I
OL
=
100
A
1.65 - 3.6
0.2
B Outputs
I
OL
=
4 mA
1.65
0.45
I
OL
=
6 mA
2.3
0.4
I
OL
=
12 mA
2.3
0.7
2.7
0.4
I
OL
=
24 mA
3.0
0.55
I
I
Input Leakage Current
0
V
I
3.6V
1.65 - 3.6
5.0
A
I
OZ
3-STATE Output Leakage
0
V
O
3.6V, V
I
=
V
IH
or V
IL
1.65 - 3.6
10
A
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4
74AL
VC162245
DC Electrical Characteristics
(Continued)
AC Electrical Characteristics
Capacitance
Symbol
Parameter
Conditions
V
CC
Min
Max
Units
(V)
I
OFF
Power Off Leakage Current
0V
(V
I
, V
O
)
3.6V
0
10
mA
I
CC
Quiescent Supply Current
V
I
=
V
CC
or GND, I
O
=
0
3.6
40
A
I
CC
Increase in I
CC
per Input
V
IH
=
V
CC
-
0.6V
2.7 - 3.6
750
A
Symbol
Parameter
T
A
=
-
40
C to
+
85
C, R
L
=
500
Units
C
L
=
50 pF
C
L
=
30 pF
V
CC
=
3.3V
0.3V
V
CC
=
2.7V
V
CC
=
2.5
0.2V
V
CC
=
1.8V
0.15V
Min
Max
Min
Max
Min
Max
Min
Max
t
PHL
, t
PLH
Propagation Delay
1.3
3.0
1.5
3.5
1
3.0
1.5
6.0
ns
A to B
Propagation Delay
1.3
3.9
1.5
4.8
1
4.3
1.5
8.6
B to A
t
PZL
, t
PZH
Output Enable Time
1.3
4.3
1.5
5.4
1.0
4.9
1.5
9.3
ns
A to B
Output Enable Time
1.3
4.7
1.5
6.2
1.0
5.7
1.5
9.8
B to A
t
PLZ
, t
PHZ
Output Disable Time
1.3
4.2
1.5
4.7
1.0
4.2
1.5
7.6
ns
A to B
Output Disable Time
1.3
4.6
1.5
5.3
1.0
4.8
1.5
8.6
B to A
Symbol
Parameter
Conditions
T
A
=
+
25
C
Units
V
CC
Typical
C
IN
Input Capacitance
V
I
=
0V or V
CC
3.3
6
pF
C
IO
Input, Output Capacitance
V
O
=
0V or V
CC
3.3
7
pF
C
PD
Power Dissipation Capacitance
Outputs Enabled f
=
10 MHz, C
L
=
50 pF
3.3
20
pF
2.5
20
5
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7
4
AL
VC1622
45
AC Loading and Waveforms
FIGURE 1. AC Test Circuit
TABLE 1. Values for Figure 1
TABLE 2. Variable Matrix
(Input Characteristics: f
=
1MHz; t
r
=
t
f
=
2ns; Z
O
=
50
)
FIGURE 2. Waveform for Inverting and Non-inverting Functions
FIGURE 3. 3-STATE Output High Enable and Disable Times for Low Voltage Logic
FIGURE 4. 3-STATE Output Low Enable and Disable Times for Low Voltage Logic
TEST
SWITCH
t
PLH
, t
PHL
Open
t
PZL
, t
PLZ
V
L
t
PZH
, t
PHZ
GND
Symbol
V
CC
3.3V
0.3V
2.7V
2.5
0.2V
1.8V
0.15V
V
mi
1.5V
1.5V
V
CC
/2
V
CC
/2
V
mo
1.5V
1.5V
V
CC
/2
V
CC
/2
V
X
V
OL
+
0.3V
V
OL
+
0.3V
V
OL
+
0.15V
V
OL
+
0.15V
V
Y
V
OH
-
0.3V
V
OH
-
0.3V
V
OH
-
0.15V
V
OH
-
0.15V
V
L
6V
6V
V
CC
*2
V
CC
*2
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