ISL3280E_08 Datasheet, PDF (3/4 Pages) Intersil Corporation – World’s Most Power-Effi cient

Intersil Interface Products
15kV HBM ESD Protected Dual Protocol
Transceivers with User Configurable
Ports Deliver Exceptional Protection
Selectable RS-232 or RS485/422 Port in One Package
Single Port
2.2V min. Tx output voltage for
exceptional noise immunity in
RS-485/422 protocols and 1Mbps
Rx data rate in RS-232 mode.
Dual Port
Additional port on two-channel
version allows option for two
RS-485/422 transceivers or four
RS-232 transceivers.
Full Fail-Safe Rx
Guarantees a high level
receiver output if the receiver
inputs are floating or shorted.
Increased System Noise Immunity
Exceptional RS-485/RS-422 differential
V_OUT (2.7V/3.1V).
VCC1
5V
485 RX OUT
2 1 28 27
3
26 ^ISL81334
24
4
5
485 TX EN ²³
6
22
485 TX IN
7
5V ²¹
5V ²⁰
19
232 TX IN
18
232 TX IN
17
232 RX OUT
16
232 RX OUT
15
8 _5V
9 _0V
11
10
13
12
14
120 Ω
RS-485 INTERFACE
120 Ω
RS-232 INTERFACE
27 28 1 2
3
ISL81334 ₂₆
13
17
12
485 RX OUT
18
11
485 TX EN
10
19 _{485 TX IN}
5V ⁹
8
0V
4
5
6
7
14
21 _5V
20 _5V
24
232 RX OUT
25 _{232 RX OUT}
22
232 TX IN
23
232 TX IN
15
VCC2
5V
Programmable Configuration
Control pins enable single
RS-485/RS-422 or dual RS-232.
15kV HBM ESD Protection
On all bus pins
Multi-Protocol - RS-232 and RS-485 - High ESD
Device
Supported
Protocols
# of
High Data Rate RS-485/RS-232 RS-485 Rx
V_LOGIC
RXEN Loopback V_CC
Ports # of Tx/Rx per Port ESD (kV)
(Mbps)
Failsafe Type Supply Pin? Polarity Feature? (V)
Package
ISL41334 RS-232, RS-422,
ISL3333
RS-485
2
1/1 RS-485, RS-422;
2/2 RS-232
15
20, 0.46, 0.115/0.5
Full
5
Yes
Low
Yes
40 Ld QFN
3.3
ISL41387 RS-232, RS-422,
ISL3331
RS-485
1
1/1 RS-485, RS-422;
2/2 RS-232
15
20, 0.46, 0.115/0.5
Full
Yes
High and
Low
Yes
5
40 Ld QFN
3.3
ISL81334 RS-232, RS-422,
ISL3332
RS-485
2
1/1 RS-485, RS-422;
2/2 RS-232
15
20/0.5
Full
No
None
Yes
5 28 Ld SOIC,
3.3 28 Ld SSOP
ISL81387 RS-232, RS-422,
ISL3330
RS-485
1
1/1 RS-485, RS-422;
2/2 RS-232
15
20, 0.46/0.5
Full
No
High
Yes
5 20 Ld SOIC,
3.3 20 Ld SSOP
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