LTC489ISW Linear Technology, LTC489ISW Datasheet - Page 5

• Manufacturer Part Number: LTC489ISW
• Description: IC LINE RCVR RS485 QUAD 16-SOIC
• Manufacturer: Linear Technology
• Type: Line Receiverr

Specifications of LTC489ISW

• Number Of Drivers/receivers: 0/4
• Protocol: RS422, RS485
• Voltage - Supply: 4.75 V ~ 5.25 V
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (0.300", 7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

PIN FUNCTIONS
B 1 (Pin 1): Receiver 1 Input.
A1 (Pin 2): Receiver 1 Input.
RO1 (Pin 3): Receiver 1 Output. If the receiver output
is enabled, then if A > B by 200mV, RO1 will be high. If
A < B by 200mV, then RO1 will be low.
EN (Pin 4) LTC488: Receiver Output Enabled. See Function
Table for details.
EN12 (Pin 4) LTC489: Receiver 1, Receiver 2 Output
Enabled. See Function Table for details.
RO2 (Pin 5): Receiver 2 Output. Refer to RO1.
A2 (Pin 6): Receiver 2 Input.
B2 (Pin 7): Receiver 2 Input.
FUNCTION TABLES
LTC488
DIFFERENTIAL
A – B
V
–0.2V < V
V
X
ID
ID
≥ 0.2V
≤ 0.2V
ID
< 0.2V
EN
H
X
H
X
H
X
L
ENABLES
EN
X
X
X
H
L
L
L
OUTPUT
RO
H
H
?
?
L
L
Z
GND (Pin 8): Ground Connection.
B3 (Pin 9): Receiver 3 Input.
A3 (Pin 10): Receiver 3 Input.
RO3 (Pin 11): Receiver 3 Output. Refer to RO1.
EN (Pin 12) LTC488: Receiver Output Disabled. See Func-
tion Table for details.
EN34 (Pin 12) LTC489: Receiver 3, Receiver 4 output
enabled. See Function Table for details.
RO4 (Pin 13): Receiver 4 Output. Refer to RO1.
A4 (Pin 14): Receiver 4 Input.
B4 (Pin 15): Receiver 4 Input.
V
LTC489
DIFFERENTIAL
A – B
V
–0.2V < V
V
X
H: High Level
L: Low Level
X: Irrelevant
ID
ID
CC
≥ 0.2V
≤ 0.2V
(Pin 16): Positive Supply; 4.75V ≤ V
ID
< 0.2V
LTC488/LTC489
?: Indeterminate
Z: High Impedance (Off)
EN12 or EN34
ENABLES
H
H
H
L
CC
≤ 5.25V.
OUTPUT
RO
H
?
L
Z
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