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Description: 1. The 74HC238 is a 1-to-8 line bidirectional register transfer level (RTL) buffer IC from the 74HCT/HC series by Texas Instruments. It's designed for use in asynchronous and TTL applications, especially in IoT projects. 2. Features: This IC provides eight independent buffered inputs (IN0 to IN7), with each input having a buffer, inverter, and an enable pin (EN). It allows data flow in both directions between the input and output lines. 3. Applications: The 74HC238 is widely used as an expansion interface for microcontrollers, where it functions as a bidirectional data bus expander for interfacing multiple devices with different logic levels in IoT projects. 4. Unique benefits: This IC's primary advantage lies in its ability to buffer and invert signals, making it suitable for interfacing different logic levels (TTL and CMOS). It also enables bidirectional data flow, improving communication efficiency in IoT applications. 5. Power Consumption: With a power consumption of approxima
| Specification | Details |
|---|---|
| Part Number | 74238 |
| Manufacturer | STMicroelectronics |
| Package Type | TO-92 |
| Transistor Type | NPN BJT |
| Collector Current | 150 mA (max) |
| Emitter-Collector Voltage | -65 to +65 V |
| Collector-Emitter Saturation Voltage | 25 mV (max) |
| Hfe (Gain) | 200 (min) 500 (typ) |
| Power Dissipation | 625 mW |
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