sp336e Exar Corporation, sp336e Datasheet - Page 15

• Manufacturer Part Number: sp336e
• Description: 3.3v - 5v Programmable Rs-232/rs-485/rs-422 Serial Transceiver
• Manufacturer: Exar Corporation

REV. 1.0.0
The SP336E drivers and receivers may be configured to operate as either standard RS-485/RS-422 or RS-232
devices. RS-485/RS422 drivers have differential outputs and receivers have differential inputs. RS-232 drivers
and receivers are single-ended with inverting outputs.
1.0 FUNCTION TABLES
T
ABLE
DE/RE
Tx_EN
1
1
0
3: RS-232 M
T
T
ABLE
ABLE
1
1
0
Inputs
2: R-485/RS-422 H
1: R-485/RS-422 F
Open
Inputs
Input
0
1
TxIn
ODE
1
0
x
T
RANSMITTING
Tx_In
3.3V - 5V PROGRAMMABLE RS-232/RS-485/RS-422 SERIAL TRANSCEIVER
001 (A
D
1
0
x
RIVERS
D
High-Z
LL
Tx(A)
RIVERS
0
1
ULL
ALF
TX
Output
Outputs
≤ -5V
≤ -5V
D
D
AND
≥ 5V
UPLEX
UPLEX
Tx(A)
0
1
RX), M
High-Z
Tx(B)
: M
: M
1
0
Outputs
High-Z
ODE
ODE
ODES
15
011 (T3, R3), M
010 (T3, R3), M
011, 010 (T1, T2, R1, R2), M
Tx(B)
DE/RE
1
0
≤ -3V
Open
Input
≥ 3V
1
1
0
0
0
Inputs
R
Open / Shorted
ODE
ODE
Rx(A) - Rx(B)
ECEIVERS
≤ -200mV
Open / Shorted
> -50mV
Rx(A) - Rx(B)
Inputs
R
101 (T1, T3, R1, R3)
≤ -200mV
100 (T1, T3, R1, R3)
> -50mV
ECEIVING
x
x
R
ECEIVERS
Output
0
1
1
ODE
110 (R1- R4)
Output
RxOut
Outputs
1
0
1
High-Z
High-Z
RxOut
1
0
1
SP336E