http://www.datasheetcatalog.org/datasheets/208/301092_DS.pdf
**broken link removed**
Check the datasheet
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For Tsop4838
FEATURES
• Low supply current
• Photo detector and preamplifier in one
package
• Internal filter for PCM frequency
• Improved shielding against EMI
• Supply voltage: 2.7 V to 5.5 V
• Improved immunity against ambient light
• Insensitive to supply voltage ripple and noise
• Compliant to RoHS Directive 2002/95/EC and in
accordance to WEEE 2002/96/EC
DESCRIPTION
These products are miniaturized receivers for infrared
remote control systems. A PIN diode and a preamplifier are
assembled on a lead frame, the epoxy package acts as an
IR filter.
For TSOP1738
Photo detector and preamplifier in one package
Internal filter for PCM frequency
Improved shielding against electrical field
disturbance
TTL and CMOS compatibility
• Supply voltage: 4.5 V to 5.5 V
Output active low
Low power consumption
High immunity against ambient light
Continuous data transmission possible
(up to 2400 bps)
Suitable burst length .10 cycles/burst