SP3495E Datasheet, PDF (3/17 Pages) Exar Corporation – HIGH SPEED +3.3V RS-485/RS-422 TRANSCEIVERS WITH +/-15KV ESD PROTECTION AND ADVANCED FAILSAFE

SP3495E-3497E
REV. 1.0.0
HIGH SPEED +3.3V RS-485/RS-422 TRANSCEIVERS WITH +/-15KV ESD PROTECTION AND ADVANCED FAILSAFE
PIN DESCRIPTIONS
Pin Assignments
PIN NUMBER
HALF DUPLEX
SP3495E
FULL DUPLEX
SP3496E
SP3497E
1
2
2
2
-
3
3
-
4
4
3
5
5
4
6, 7
6
-
-
7
-
-
8
1
14
-
8
12
-
7
11
-
5
9
-
6
10
-
-
1, 8, 13
PIN NAME
TYPE
DESCRIPTION
RO
RE
DE
DI
GND
A
B
Vcc
A
B
Y
Z
NC
Receiver Output. When RE is low and if (A-
O B) ≥ -40mV, RO is High. If (A-B) ≤ -200mV,
RO is Low.
Receiver Output Enable, When RE is Low,
RO is enabled. When RE is High, RO is
I high impedance. RE should be High and
DE should be low to enter shutdown mode.
RE is a hot-swap input.
Driver Output Enable. When DE is High,
outputs are enabled. When DE is low, out-
I puts are high impedance. DE should be low
and RE should be High to enter shutdown
mode. DE is a hot-swap input
Driver Input. With DE high, a low level on DI
forces Non-Inverting output low and invert-
I ing output high. Similarly, a high level on DI
forces Non-Inverting output High and Invert-
ing output Low.
Pwr Ground
O
Non-Inverting Receiver Input and Non-
Inverting Driver Output
O
Inverting Receiver Input and Inverting
Driver Output
Pwr
+3.3V power supply input. Bypass with
0.1uF capacitor.
I Non-Inverting Receiver Input
I Inverting Reciever Input
O Non-Inverting Driver Output
O Inverting Driver Output
- No Connect, not internally connected
Pin type: I=Input, O=Output.
3