ASSR-3210, ASSR-3211, ASSR-3220
General Purpose, Form A, Solid State Relay (Photo MOSFET)
(250V/0.2A/10)
Data Sheet
Description
The ASSR-32XX Series consists of an AlGaAs infrared
light-emitting diode (LED) input stage optically coupled
to a high-voltage output detector circuit. The detector
consists of a high-speed photovoltaic diode array and
driver circuitry to switch on/o two discrete high volt-
age MOSFETs. The relay turns on (contact closes) with a
minimum input current of 3mA through the input LED.
The relay turns o (contact opens) with an input voltage
of 0.8V or less.
The single channel con gurations, ASSR-3210 and ASSR-
3211, are equivalent to 1 Form A Electromechanical
Relays (EMR), and the dual channel con guration, ASSR-
3220, is equivalent to 2 Form A EMR. They are available
in 4-pin SO, 6-pin DIP, 8-pin DIP and Gull Wing Surface
Mount for DIP packages. Their electrical and switching
characteristics are speci ed over the temperature range
of -40°C to +85°C. They are used for general purpose
switching of signals and low power AC/DC loads.
ASSR-3211 enables AC/DC and DC-only output connec-
tions. For DC-only connection, the output current, Io,
increases to 0.4A and the on-resistance, R
(ON)
reduces
to 2.5.
Applications
Telecommunication Switching
Data Communications
Industrial Controls
Medical
Security
EMR / Reed Relay Replacement
Features
Compact Solid-State Bi-directional Signal Switch
Single and Dual Channel Normally-o Single-Pole-
Single-Throw (SPST) Relay
250V Output Withstand Voltage
0.2A or 0.4A Current Rating
(See Schematic for ASSR-3211 Connections A & B)
Low Input Current:
CMOS Compatibility
Low On-Resistance:
2 Typical for DC-only, 8 Typical for AC/DC
Very High Output O -state Impedance:
10 Teraohms Typical
High Speed Switching:
0.25ms (Ton), 0.02ms (To ) Typical
High Transient Immunity: >1kV/s
High Input-to-Output Insulation Voltage
(Safety and Regulatory Approvals)
- 3750 Vrms for 1 min per UL1577
- CSA Component Acceptance
Functional Diagram
CAUTION: It is advised that normal static precautions be taken in handling and assembly
of this component to prevent damage and/or degradation which may be induced by ESD.
Lead (Pb) Free
RoHS 6 fully
compliant
RoHS 6 fully compliant options available;
-xxxE denotes a lead-free product
Truth Table
Opto-isolation
Turn-off
Circuit
1
2
4
3
Single Channel, SPST Relay,
1 Form A in 4-Pin SO Package
CloseOn
OpenOff
OutputLED
