Datasheet

+
RL1
220
34
5
6
7
8
9
10
11
12
13
14
15
16
1
2
BUSL1
BUSL2
VBPF
VS
VDD
BAT
RX
RXI
TX
TXI
TSS721A
RL2
220
SENSOR
SYSTEM
(e.g., MSP430)
METER -BUS
SSC
C
SC
C
STC
C
RIS
R
RIDD
R
+
34
5
6
7
8
9
10
11
12
13
14
15
16
1
2
BUSL1
BUSL2
VBPF
VS
VDD
BAT
RX
RXI
TX
TXI
TSS721A
SENSOR
SYSTEM
(e.g., MSP430)
+ BAT
C
SC
C
STC
C
RIS
R
RIDD
R
+
34
5
6
7
8
9
10
11
12
13
14
15
16
1
2
BUSL1
BUSL2
VBPF
VS
VDD
BAT
RX
RXI
TX
TXI
TSS721A
RIS
SENSOR
SYSTEM
(e.g., MSP430)
+ BAT
C
SC
C
STC
C
RIS
R
RIDD
R
Remote Supply
Remote Supply/Battery Support
Battery Supply
SSC
SSC
T1
load
R
VDD
C
RL1
220
RL2
220
RL1
220
RL2
220
SC
GND RIDD STC
RIS
GND
RIDD
STCSC
RIS
GND
RIDD
STCSC
SENSOR
SYSTEM
(e.g., MSP430)
+ BAT
SSC
C
+
34
5
6
7
8
9
10
11
12
13
14
15
16
1
2
BUSL1
BUSL2
VBPF
VS
VDD
BAT
RX
RXI
TX
TXI
TSS721A
RIS SC GND RIDD STC
SC
C
STC
C
OC1
R1
TXI
RXI
OC2
VDD
C
load
R
RIS
R
RIDD
R
R2
R3
R4
RL1
220
RL2
220
METER -BUS
Figure 10
TSS721A
SLAS222A –APRIL 1999–REVISED SEPTEMBER 2009................................................................................................................................................ www.ti.com
NOTE: R
DSon
of the transistor T1 (BSS84) at low battery voltage must be considered during application design.
Figure 8. Basic Applications for Different Supply Modes
Figure 9. Basic Optocoupler Application
10 Submit Documentation Feedback Copyright © 1999–2009, Texas Instruments Incorporated
Product Folder Link(s): TSS721A