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ADM488 Datasheet(PDF) 4 Page - Analog Devices

Part No. ADM488
Description  Full-Duplex, Low Power, Slew Rate Limited, EIA RS-485 Transceivers
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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ADM488 Datasheet(HTML) 4 Page - Analog Devices

 
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ADM488/ADM489
–4–
REV. 0
ADM488 PIN FUNCTION DESCRIPTIONS
Pin
Mnemonic
Function
1VCC
Power Supply, 5 V
± 10%.
2
RO
Receiver Output. When A > B by 200 mV,
RO = high. If A < B by 200 mV, RO = low.
3
DI
Driver Input. A logic Low on DI forces Y low
and Z high while a logic High on DI forces Y
high and Z low.
4
GND
Ground Connection, 0 V
5
Y
Noninverting Driver, Output Y
6
Z
Inverting Driver, Output Z
7
B
Inverting Receiver Input B
8
A
Noninverting Receiver Input A
ADM489 PIN FUNCTION DESCRIPTIONS
DIP/SOIC
TSSOP
Pin
Pin
Mnemonic Function
1, 8, 13
2, 9, 10,
NC
No Connect. No connections
13, 16
are required to this pin.
2
3
RO
Receiver Output. When
enabled if A > B by 200 mV
then RO = high. If A < B by
200 mV then RO = low.
34
RE
Receiver Output Enable. A
low level enables the receiver
output, RO. A high level
places it in a high impedance
state.
4
5
DE
Driver Output Enable. A
high level enables the driver
differential outputs, Y and Z.
A low level places it in a high
impedance state.
5
6
DI
Driver Input. When the
driver is enabled, a logic Low
on DI forces Y low and Z
high, while a logic High on
DI forces Y high and Z low.
6, 7
7, 8
GND
Ground Connection, 0 V
9
11
Y
Noninverting Driver
Output Y
10
12
Z
Inverting Driver Output Z
11
14
B
Inverting Receiver Input B
12
15
A
Noninverting Receiver
Input A
14
1
VCC
Power Supply, 5 V
± 10%.
PIN CONFIGURATIONS
8-Lead DIP/SO
1
2
3
4
8
7
6
5
TOP VIEW
(Not to Scale)
ADM488
VCC
Y
Z
B
A
RO
DI
GND
14-Lead DIP/SO
14
13
12
11
10
9
8
1
2
3
4
7
6
5
TOP VIEW
(Not to Scale)
NC = NO CONNECT
NC
B
A
NC
VCC
RO
RE
DE
ADM489
NC
Y
Z
DI
GND
GND
16-Lead TSSOP
14
13
12
11
16
15
10
9
8
1
2
3
4
7
6
5
TOP VIEW
(Not to Scale)
ADM489
NC = NO CONNECT
VCC
NC
B
A
NC
NC
RO
RE
NC
Y
Z
DE
DI
GND
GND
NC


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