ISL3281EFHZ-T7A Intersil, ISL3281EFHZ-T7A Datasheet - Page 4

• Manufacturer Part Number: ISL3281EFHZ-T7A
• Description: RS-422/RS-485 Interface IC 6LD SNG RS-485 REC ENB EXT TEMP
• Manufacturer: Intersil

Specifications of ISL3281EFHZ-T7A

• Product Category: RS-422/RS-485 Interface IC
• Rohs: yes
• Data Rate: 20 Mbps
• Operating Supply Voltage: 3 V to 5 V
• Supply Current: 500 uA
• Operating Temperature Range: - 40 C to + 125 C
• Mounting Style: SMD/SMT
• Package / Case: SOT-23-6
• Function: Transceiver
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Shutdown: Yes

Truth Table
NOTE: *Shutdown Mode, except for ISL3280E, ISL3284E
Pin Descriptions
Typical Operating Circuits
PIN NAME
RE, RE
GND
RE, RE
V
RO
NC
V
A
B
CC
1, 0
1, 0
1, 0
0, 1
L
Receiver output: If A - B ≥ -50mV, RO is high; If A - B ≤ -200mV, RO is low; RO = High if A and B are unconnected (floating) or shorted.
Receiver output enable. RO is enabled when RE/RE is high / low; RO is high impedance when RE/RE is low/high. If the Rx enable
function isn’t used, connect RE directly to GND, or connect RE through a 1kΩ, or greater, resistor to V
low/high.
Ground connection. This is also the potential of the TDFN thermal pad.
±16.5kV IEC61000 ESD Protected RS-485, RS-422 level, noninverting receiver input.
±16.5kV IEC61000 ESD Protected RS-485, RS-422 level, inverting receiver input.
System power supply input (3.0V to 5.5V). On devices with a V
Logic-Level Supply which sets the V
of the RO output (ISL3282E, ISL3284E, ISL3285E only). Power-up this supply after V
No Connection.
INPUTS
3
5
Inputs Open/Shorted
ISL3280E, ISL3281E, ISL3282E, ISL3283E, ISL3284E, ISL3285E
RO
RE
RECEIVING
≥ -0.05V
+3.3V TO 5V
≤ -0.2V
ISL3281E
R
GND
A - B
X
2
1
V
4
CC
A
B
6
4
+
0.1µF
IL
R
T
/ V
OUTPUT
High-Z*
IH
RO
1
0
1
levels for the RE (ISL3282E only) and RE (ISL3285E only) pins, and sets the V
NETWORK WITH ENABLES
FUNCTION
L
pin, power-up V
0.1µF
CC
first.
CC
+
, and keep V
6
4
Y
Z
+3.3V
ISL329xE
V
CC
GND
CC
2
L
5
≤ V
. RE/RE are internally pulled
D
CC.
DE
DI
1
3
October 18, 2007
OH
FN6543.2
level