| PartNumber | TSOP77438TR | TSOP77438TT | TSOP77436TT |
| Description | Infrared Receivers 38kHz AGC4 Heimdall NEC, Sharp Rem Cntrl | Infrared Receivers Heimdall 38kHz AGC4 | Infrared Receivers Heimdall 36kHz AGC4 |
| Manufacturer | Vishay | Vishay | Vishay |
| Product Category | Infrared Receivers | Infrared Receivers | Infrared Receivers |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Carrier Frequency | 38 kHz | 38 kHz | 36 kHz |
| Transmission Distance | 40 m | 40 m | 40 m |
| Beam Angle | 100 deg | 100 deg | 100 deg |
| Output Current | 5 mA | 5 mA | 5 mA |
| Operating Supply Voltage | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V |
| Operating Supply Current | 0.7 mA | 700 uA | 700 uA |
| Minimum Operating Temperature | - 25 C | - 25 C | - 25 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Package / Case | Heimdall-4 | Heimdall-4 | Heimdall-4 |
| Packaging | Reel | - | - |
| Series | TSOP77 | TSOP77 | TSOP77 |
| Brand | Vishay Semiconductors | Vishay Semiconductors | Vishay Semiconductors |
| Moisture Sensitive | Yes | Yes | Yes |
| Product Type | IR Receivers | IR Receivers | IR Receivers |
| Factory Pack Quantity | 2300 | 2200 | 2200 |
| Subcategory | Infrared Data Communications | Infrared Data Communications | Infrared Data Communications |