Texas Instruments SN74LVC245B Octal Bus Transceiver
Texas Instruments SN74LVC245B Octal Bus Transceiver includes 8 individual high-speed CMOS transceivers with 3-state outputs. This device operates over a 1.1V to 3.6V voltage range and a maximum propagation delay of 5ns at 3.3V. The SN74LVC245B transceiver supports up to 5.5V overvoltage-tolerant inputs independent of VCC and partial-power-down with back-drive protection (Ioff). This octal bus transceiver offers high output drive strengths of ±24mA at 3.3V, ±8mA at 2.3V, and ±4mA at 1.65V. The SN74LVC245B transceiver is available in the RKS (VQFN,20) package with 4.5mm x 2.5mm dimensions. Typical applications include driving an indicator LED, re-driving a digital signal, driving a transmission line, and holding a signal during a controller set.
Features
- 1.1V to 3.6V operating voltage range
- Over-voltage tolerant inputs support up to 5.5V independent of VCC
- Maximum propagation delay of 5ns at 3.3V
- Supports partial-power-down with back drive protection (Ioff)
- High output drive strength:
- ±24mA at 3.3V
- ±8mA at 2.3V
- ±4mA at 1.65V
Applications
- Drive an indicator LED
- Redrive a digital signal
- Drive a transmission line
- Hold a signal during controller reset
Functional Block Diagram
Electrical Placement of Clamping Diodes for Each Input and Output
Application Schematic
Application Curves
