LBA127L
Dual Single-Pole, Combination
OptoMOS® Relay
INTEGRATED
CIRCUITS
DIVISION
Parameter
Blocking Voltage
Ratings
250
Units
Description
VP
mArms / mADC
LBA127L comprises two independent solid state
relays (one current-limited, single-pole, normally
open (1-Form-A) relay and one single-pole, normally
closed (1-Form-B) relay), in an 8-pin package that
employs optically coupled MOSFET technology to
provide 3750Vrms of input to output isolation.
Load Current
150
On-Resistance (max)
15
Features
• Current Limited 1-Form-A Relay
• 3750Vrms Input/Output Isolation
• Low Drive Power Requirements (TTL/CMOS
Compatible)
The optically coupled relay outputs, which use the
patented OptoMOS architecture, are controlled by a
highly efficient GaAIAs infrared LED.
• High Reliability
• Arc-Free With No Snubbing Circuits
• FCC Compatible
LBA127L is designed to provide an ideal solution
where a complementary Form-A/Form-B relay pair is
required in a space-saving single package.
• VDE Compatible
• No EMI/RFI Generation
• Small 8-Pin Package
Approvals
• UL Recognized Component: File E76270
• CSA Certified Component: Certificate 1175739
• EN/IEC 60950-1 Certified Component:
TUV Certificate B 09 07 49410 004
• Machine Insertable, Wave Solderable
• Surface Mount, Tape & Reel Version Available
Applications
• Telecommunications
• Telecom Switching
• Tip/Ring Circuits
Ordering Information
Part #
LBA127L
Description
8-Pin DIP (50/Tube)
• Modem Switching (Laptop, Notebook, Pocket Size)
• Hook Switch
• Dial Pulsing
LBA127LS
LBA127LSTR
8-Pin Surface Mount (50/Tube)
8-Pin Surface Mount (1,000/Reel)
• Ground Start
• Ringing Injection
• Instrumentation
• Multiplexers
Pin Configuration
1
8
+ Control - Normally Closed
Normally Closed Pole
Normally Open Pole
• Data Acquisition
• Electronic Switching
• I/O Subsystems
• Meters (Watt-Hour, Water, Gas)
• Medical Equipment-Patient/Equipment Isolation
• Security
2
7
6
– Control - Normally Closed
3
+ Control - Normally Open
4
5
– Control - Normally Open
• Aerospace
• Industrial Controls
Switching Characteristics of
Normally Open
(Form A) Devices
Switching Characteristics of
Normally Closed
(Form B) Devices
Form-A
Form-B
IF
IF
ILOAD
90%
90%
10%
10%
ILOAD
t
t
t
t
on
on
off
off
Pb
e3
DS-LBA127L-R08
1
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