Datasheet
HMHA281, HMHA2801, HMHA2801A — DC Input Half Pitch Mini-Flat Package 4-Pin Optocouplers
©2011 Fairchild Semiconductor Corporation www.fairchildsemi.com
HMHA281, HMHA2801, HMHA2801A Rev. 1.1.1
April 2011
HMHA281, HMHA2801, HMHA2801A
DC Input Half Pitch Mini-Flat Package 4-Pin Optocouplers
Features
■
Compact 4-pin package (2.4mm maximum standoff
height)
■
Half pitch leads for optimum board space savings
■
Current Transfer Ratio:
HMHA2801: 80–600%
HMHA2801A: 80–160%
HMHA281: 50–600%
■
Available in tape and reel quantities of 2500
■
CSA (File #1201524), UL (File #E90700) and
VDE (File #136480) certified
Applications
■
Digital logic inputs
■
Microprocessor inputs
■
Power supply monitor
■
Twisted pair line receiver
■
Telephone line receiver
Description
The HMHA281, HMHA2801 and HMHA2801A 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 1.27mm.
Package Dimensions
0.287
(
7.29
)
0.248
(
6.30
)
0.020
(
0.51
)
0.012
(
0.30
)
0.173
(
4.40
)
TYP
0.035
(
0.89
)
0.012
(
0.30
)
0.008
(
0.20
)
0.000
(
0.0
)
PIN 1
0.106
(
2.69
)
0.091
(
2.31
)
0.030
(
0.75
)
0.022
(
0.55
)
0.050
(
1.27
)
0.094
(
2.39
)
0.079
(
2.01
)
1
2
4
3 EMITTER
COLLECTANODE
CATHODE
OR
Equivalent Circuit
Note:
All dimensions are in inches (millimeters)