LTC1485CN8-PBF View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1485CN8-PBF' PDF : 12 Pages View PDF
LTC1485
PI FU CTIO S
RO (Pin 1): Receiver Output. If the receiver output is
enabled (RE low), then if A > B by 200mV, RO will be high.
If A < B by 200mV, then RO will be low.
RE (Pin 2): Receiver Output Enable. A low enables the
receiver output, RO. A high input forces the receiver
output into a high impedance state.
DE (Pin 3): Driver Output Enable. A high on DE enables the
driver outputs, A and B. A low input will force the driver
outputs into a high impedance state.
DI (Pin 4): Driver Input. If the driver outputs are enabled
(DE high), then a low on DI forces the driver outputs A low
and B high. A high on DI will force A high and B low.
GND (Pin 5): Ground Connection.
A (Pin 6): Driver Output/Receiver Input.
B (Pin 7): Driver Output/Receiver Input.
VCC (Pin 8): Positive Supply. 4.75V ≤ VCC ≤ 5.25V.
TEST CIRCUITS
A
VOD2
B
R
R
VOC
1485 F01
Figure 1. Driver DC Test Load
A
DI
DRIVER
B
RDIFF
CL1
A
RECEIVER
CL2
B
RO
15pF
1485 F02
Figure 2. Driver/Receiver Timing Test Circuit
RECEIVER
OUTPUT
S1
1k
VCC
CL
1k
S2
1485 F03
Figure 3. Receiver Timing Test Load
OUTPUT
UNDER TEST
500Ω
CL
S1
VCC
S2
1485 F04
Figure 4. Driver Timing Test Load
5
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