74ALVC2245 Low Voltage Bidirectional Transceiver with 3.6V Tolerant Inputs and Outputs and 26: Series
Resistors in B Outputs
February 2002
Revised March 2005
74ALVC2245
Low Voltage Bidirectional Transceiver
with 3.6V Tolerant Inputs and Outputs
and 26: 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 26
:
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
s
1.65V to 3.6V V
CC
supply operation
s
3.6V tolerant inputs and outputs
s
26
:
series resistors in B Port outputs
s
Power-off high impedance inputs and outputs
s
Supports Live Insertion and Withdrawal (Note 1)
s
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
s
Uses patented Quiet Series
¥
noise/EMI reduction
circuitry
s
Latchup conforms to JEDEC JED78
s
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:
Order Number
74ALVC2245WM
74ALVC2245MTC
Package Number
M20B
MTC20
Package Description
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
Pin Descriptions
Pin Names
OE
T/R
A
0
–A
7
B
0
–B
7
Description
Output Enable Input (Active LOW)
Transmit/Receive Input
Side A Inputs or 3-STATE Outputs
Side B Inputs or 3-STATE Outputs
Quiet Series
¥
is a trademark of Fairchild Semiconductor Corporation.
© 2005 Fairchild Semiconductor Corporation
DS500717
www.fairchildsemi.com
74ALVC2245
Absolute Maximum Ratings
(Note 3)
Supply Voltage (V
CC
)
DC Input Voltage (V
I
)
Output Voltage (V
O
) (Note 4)
DC Input Diode Current (I
IK
)
V
I
0V
DC Output Diode Current (I
OK
)
V
O
0V
DC Output Source/Sink Current
(I
OH
/I
OL
)
DC V
CC
or GND Current per
Supply Pin (I
CC
or GND)
Storage Temperature Range (T
STG
)
0.5V to
4.6V
0.5V to 4.6V
0.5V to V
CC
0.5V
50 mA
50 mA
r
50 mA
r
100 mA
65
q
C to
150
q
C
Recommended Operating
Conditions
(Note 5)
Power Supply
Operating
Input Voltage
Output Voltage (V
O
)
Free Air Operating Temperature (T
A
)
Minimum Input Edge Rate (
'
t/
'
V)
V
IN
0.8V to 2.0V, V
CC
3.0V
10 ns/V
Note 3:
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 4:
I
O
Absolute Maximum Rating must be observed.
Note 5:
Floating or unused control inputs must be held HIGH or LOW.
1.65V to 3.6V
0V to V
CC
0V to V
CC
40
q
C to
85
q
C
DC Electrical Characteristics
Symbol
V
IH
Parameter
HIGH Level Input Voltage
Conditions
V
CC
(V)
1.65 - 1.95
2.3 - 2.7
2.7 - 3.6
V
IL
LOW Level Input Voltage
1.65 - 1.95
2.3 - 2.7
2.7 - 3.6
V
OH
HIGH Level Output Voltage
A Outputs
I
OH
I
OH
I
OH
I
OH
Min
0.65 x V
CC
1.7
2.0
0.35 x V
CC
0.7
0.8
V
CC
- 0.2
1.2
2.0
1.7
2.2
2.4
2
V
CC
- 0.2
1.2
1.9
1.7
2.4
2
2
0.2
0.45
0.4
0.7
0.4
0.55
0.2
0.45
0.4
0.55
0.55
0.6
0.8
V
V
V
V
Max
Units
100
P
A
4 mA
6 mA
12 mA
1.65 - 3.6
1.65
2.3
2.3
2.7
3.0
I
OH
HIGH Level Output Voltage
B Outputs
I
OH
I
OH
I
OH
I
OH
I
OH
I
OH
V
OL
LOW Level Output Voltage
A Outputs
I
OL
I
OL
I
OL
I
OL
I
OL
LOW Level Output Voltage
B Outputs
I
OL
I
OL
I
OL
I
OL
I
OL
I
OL
I
I
I
CC
Input Leakage Current
Quiescent Supply Current
V
I
24 mA
100
P
A
2 mA
4 mA
6 mA
8 mA
12 mA
100
P
A
4 mA
6 mA
12 mA
24 mA
100
P
A
2 mA
4 mA
6 mA
8 mA
12 mA
V
CC
or GND, I
O
0
3.0
1.65 - 3.6
1.65
2.3
2.3
3.0
2.7
3.0
1.65 - 3.6
1.65
2.3
2.3
2.7
3.0
1.65 - 3.6
1.65
2.3
2.3
3.0
2.7
3.0
1.65 - 3.6
3.6
0
d
V
I
d
3.6V
r
5.0
40
P
A
P
A
3
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