| PartNumber | CD74HC640E | CD74HC640M | CD74HC640EG4 |
| Description | Bus Transceivers Hi-Sp CMOS Octal Inv Octal Inv Bus Xcvr | Bus Transceivers Hi-Sp CMOS Octal Inv Octal Inv Bus Xcvr | IC TRANSCVR INVERT 6V 20DIP |
| Manufacturer | Texas Instruments | Texas Instruments | - |
| Product Category | Bus Transceivers | Bus Transceivers | - |
| RoHS | Y | Y | - |
| Logic Family | HC | HC | - |
| Input Level | CMOS | CMOS | - |
| Output Level | CMOS | CMOS | - |
| Output Type | 3-State | 3-State | - |
| High Level Output Current | - 7.8 mA | - 7.8 mA | - |
| Low Level Output Current | 7.8 mA | 7.8 mA | - |
| Propagation Delay Time | 90 ns | 90 ns | - |
| Supply Voltage Max | 6 V | 6 V | - |
| Supply Voltage Min | 2 V | 2 V | - |
| Minimum Operating Temperature | - 55 C | - 55 C | - |
| Maximum Operating Temperature | + 125 C | + 125 C | - |
| Package / Case | PDIP-20 | SOIC-20 | - |
| Packaging | Tube | Tube | - |
| Function | Bus Transceiver | Bus Transceiver | - |
| Height | 4.57 mm | 2.35 mm | - |
| Length | 24.33 mm | 12.8 mm | - |
| Number of Circuits | 8 | 8 | - |
| Operating Temperature Range | - 55 C to + 125 C | - 55 C to + 125 C | - |
| Product | Standard Transceiver | Standard Transceiver | - |
| Series | CD74HC640 | CD74HC640 | - |
| Technology | CMOS | CMOS | - |
| Width | 6.35 mm | 7.52 mm | - |
| Brand | Texas Instruments | Texas Instruments | - |
| Mounting Style | Through Hole | SMD/SMT | - |
| Number of Channels | 8 | 8 | - |
| Supply Current Max | 8 uA | 8 uA | - |
| Operating Supply Voltage | 2 V to 6 V | 2 V to 6 V | - |
| Polarity | Inverting | Inverting | - |
| Product Type | Bus Transceivers | Bus Transceivers | - |
| Factory Pack Quantity | 20 | 25 | - |
| Subcategory | Logic ICs | Logic ICs | - |
| Unit Weight | 0.042297 oz | 0.017662 oz | - |