LTC489IN#PBF Linear Technology, LTC489IN#PBF Datasheet - Page 6
![IC LINE RCVR RS485 QUAD 16-DIP](/photos/6/64/66499/161-16-dip_sml.jpg)
LTC489IN#PBF
Manufacturer Part Number
LTC489IN#PBF
Description
IC LINE RCVR RS485 QUAD 16-DIP
Manufacturer
Linear Technology
Type
Line Receiverr
Datasheet
1.LTC488CNPBF.pdf
(12 pages)
Specifications of LTC489IN#PBF
Number Of Drivers/receivers
0/4
Protocol
RS422, RS485
Voltage - Supply
4.75 V ~ 5.25 V
Mounting Type
Through Hole
Package / Case
16-DIP (0.300", 7.62mm)
Ic Interface Type
RS485
Supply Voltage Range
4.75V To 5.25V
Driver Case Style
DIP
No. Of Pins
16
Operating Temperature Range
-40°C To +85°C
Msl
MSL 1 - Unlimited
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
LTC488/LTC489
TEST CIRCUITS
SWITCHING TIME WAVEFORMS
6
Note: The input pulse is supplied by a generator having the following characteristics:
INPUT
EN OR
EN12
A, B
RO
RO
RO
f = 1MHz, Duty Cycle = 50%, t
–V
V
V
V
0V
5V
3V
OH
0V
V
OL
D
V
OD2
OD2
OH
OL
Figure 2. Receiver Enable and Disable Timing Test Circuit
DRIVER
Figure 4. Receiver Enable and Disable Times
RECEIVER
OUTPUT
1.5V
Figure 3. Receiver Propagation Delays
Figure 1. Receiver Timing Test Circuit
100pF
0V
t
ZH
t
ZL
t
PHL
f = 1MHz; t
f = 1MHz; t
1.5V
C
1.5V
L
r
< 10ns, t
1.5V
54Ω
r
≤ 10ns; t
100pF
OUTPUT NORMALLY HIGH
OUTPUT NORMALLY LOW
r
1k
INPUT
≤ 10ns; t
f
S2
S1
≤ 10ns, Z
f
≤ 10ns
f
A
B
≤ 10ns
1k
RECEIVER
OUT
= 50Ω
V
4889 F02
CC
1.5V
t
t
LZ
HZ
0V
t
PLH
C
4889 F01
L
RO
4889 F03
4889 F04
1.5V
0.5V
0.5V
4889fb