Data Sheet

HMHA281, HMHA2801 Series — 4-Pin Half-Pitch Mini-Flat Phototransistor Optocouplers
©2011 Fairchild Semiconductor Corporation www.fairchildsemi.com
HMHA281, HMHA2801 Series Rev. 5.2
June 2015
HMHA281, HMHA2801 Series
4-Pin Half-Pitch Mini-Flat Phototransistor Optocouplers
Features
■ Compact 4-pin Package
– 2.4 mm Maximum Standoff Height
– Half-pitch Leads for Optimum Board Space Savings
■ Current Transfer Ratio:
– HMHA281: 50% to 600%
– HMHA2801: 80% to 600%
– HMHA2801A: 80% to 160%
– HMHA2801B: 130% to 260%
– HMHA2801C: 200% to 400%
■ Safety and Regulatory Approvals:
– UL1577, 3,750 VAC
RMS
for 1 Minute
– DIN-EN/IEC60747-5-5, 565 V Peak Working
Insulation Voltage
Applications
■ Digital Logic Inputs
■ Microprocessor Inputs
■ Power Supply Monitor
■ Twisted Pair Line Receiver
■ Telephone Line Receiver
Description
The HMHA281 and HMHA2801 series devices consist of
a gallium arsenide infrared emitting diode driving a
silicon phototransistor in a compact 4-pin mini-flat
package. The lead pitch is 1.27 mm.
Schematic Package Outline
1
2
4
3 EMITTER
COLLECTANODE
CATHODE
OR
Figure 2. Package Outlines
Figure 1. Schematic