SN75LVDM976, SN75LVDM977
9-CHANNEL DUAL-MODE TRANSCEIVERS
SLLS292B – APRIL 1998 – REVISED JANUARY 2000
logic diagrams and function tables
FUNCTION TABLE
Inputs
B–
A
DE/RE
VID
B+
(B+ – B–)
VID
≥
30 mV
– 30 mV < VID < 30 mV
VID –30 mV
Open circuit
NA
DE/RE
L
L
L
L
H
H
A
NA
NA
NA
NA
L
H
B+
Z
Z
Z
Z
H
L
Outputs
B–
Z
Z
Z
Z
L
H
A
L
?
H
?
Z
Z
Figure 1. Inverting LVD Transceiver
NA
FUNCTION TABLE
A
DE/RE
B–
B–
H
L
Open circuit
B+
NA
NA
Inputs
DE/RE
L
L
L
H
H
A
NA
NA
NA
L
H
B+
L
L
L
L
L
Outputs
B–
Z
Z
Z
H
L
A
L
H
?
Z
Z
Figure 2. Inverting Single-Ended Transceiver
A
B–
FUNCTION TABLE
Input
A
L
H
L
L
Outputs
B+
B–
H
L
B+
Figure 3. Inverting Single-Ended Driver
FUNCTION TABLE
B–
A
B+
Input
A
L
H
Outputs
B+
H
L
B–
L
H
Figure 4. Inverting LVD Driver
4
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