ADM4850 AD [Analog Devices], ADM4850 Datasheet - Page 7

• Manufacturer Part Number: ADM4850
• Description: 5 V Slew-Rate Limited Half- and Full-Duplex RS-485/RS-422 Transceivers
• Manufacturer: AD [Analog Devices]

PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
Table 8. ADM4850–ADM4853 Pin Descriptions
Pin No.
1
2
3
4
5
6
7
8
Table 9. ADM4854–ADM4857 Pin Descriptions
Pin No.
1
2
3
4
5
6
7
8
Mnemonic
RO
RE
DE
DI
GND
A
B
V
CC
Mnemonic
V
RO
DI
GND
Y
Z
B
A
CC
Figure 2. ADM4850–ADM4853 Pin Configuration
Figure 3. ADM4854–ADM4857 Pin Configuration
Description
5 V Power Supply.
Receiver Output. When enabled, if (A−B) ≥ −30 mV, then RO = high.
If (A−B) ≤ −200 mV, then RO = low.
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.
Ground.
Driver Noninverting Output.
Driver Inverting Output.
Receiver Inverting Input.
Receiver Noninverting Input.
Description
Receiver Output. When enabled, if (A−B) ≥ −30 mV, then RO = high.
If (A−B) ≤ −200 mV, then RO = low.
Receiver Output Enable.
A low level enables the receiver output, RO.
A high level places it in a high impedance state.
Driver Output Enable. A high level enables the driver differential inputs A and B.
A low level places it in a high impedance state.
Driver Input. When the driver is enabled, a logic low on DI forces A low and B high,
while a logic high on DI forces A high and B low.
Ground.
Noninverting Receiver Input A/Driver Output A.
Inverting Receiver Input B/Driver Output B.
5 V Power Supply.
GND
RO
V
RE
DE
RO
DI
CC
DI
1
2
3
4
1
2
3
4
Rev. 0 | Page 7 of 16
ADM4850/
ADM4851/
ADM4852/
(Not to Scale)
ADM4853
ADM4854/
ADM4855/
ADM4856/
(Not to Scale)
ADM4857
TOP VIEW
TOP VIEW
8
7
6
5
8
7
6
5
V
B
A
GND
A
B
Z
Y
CC
ADM4850–ADM4857