Overview
The MC74LCX138DR2G is a high-performance, 3-to-8 decoder/demultiplexer produced by onsemi. This device operates within a voltage range of 2.3 to 3.6 V, making it suitable for a variety of low-voltage applications. It features high impedance TTL compatible inputs, which significantly reduce current loading to input drivers, and TTL compatible outputs that offer improved switching noise performance. The device is particularly useful for memory address decoding and other TTL level bus-oriented applications due to its 5 V tolerant inputs, allowing safe interface with 5 V devices.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VCC) | 1.65 to 5.5 | V |
| Input Voltage (VI) | 0 to 5.5 | V |
| Output Voltage (VO) | 0 to VCC + 0.5 | V |
| Operating Temperature (TA) | -40 to +125 | °C |
| Quiescent Supply Current (ICC) | 10 µA | µA |
| Output Sink and Source Capability | 24 mA at 3 V | mA |
| ESD Performance (Human Body Model) | >2000 V | V |
| ESD Performance (Machine Model) | >200 V | V |
| Package Types | SOIC-16, TSSOP-16 |
Key Features
- Designed for 2.3 V to 3.6 V VCC operation.
- 5 V tolerant inputs, allowing interface with 5 V TTL logic.
- LVTTL and LVCMOS compatible.
- 24 mA balanced output sink and source capability at 3 V.
- Near zero static supply current (10 µA) to reduce system power requirements.
- Latchup performance exceeds 500 mA.
- Pb-free, halogen-free/BFR-free, and RoHS compliant.
- AEC-Q100 qualified and PPAP capable for automotive and other applications requiring unique site and control change requirements).
Applications
The MC74LCX138DR2G is suitable for various applications, including:
- Memory address decoding).
- TTL level bus-oriented applications).
- Demultiplexing: Can be used as an 8-output demultiplexer by using one of the active-LOW Enable inputs as the data input and the other Enable inputs as strobes).
- Parallel expansion: Can be expanded to a 1-of-32 decoder with four LCX138 devices and one inverter).
- Automotive and other applications requiring unique site and control change requirements due to its AEC-Q100 qualification and PPAP capability).
Q & A
- What is the operating voltage range of the MC74LCX138DR2G?
The MC74LCX138DR2G operates within a voltage range of 2.3 to 3.6 V, but can tolerate inputs up to 5.5 V).
- What types of inputs does the MC74LCX138DR2G have?
The device has high impedance TTL compatible inputs and three Enable inputs (two active-LOW and one active-HIGH)).
- What is the output configuration of the MC74LCX138DR2G?
The device provides eight mutually exclusive active-LOW outputs (O0-O7)).
- Can the MC74LCX138DR2G be used with 5 V devices?
- What are the key features of the MC74LCX138DR2G in terms of power consumption?
The device has near zero static supply current (10 µA) and a balanced output sink and source capability of 24 mA at 3 V).
- Is the MC74LCX138DR2G suitable for automotive applications?
- How can the MC74LCX138DR2G be expanded for larger decoding applications?
- What are the ESD performance specifications of the MC74LCX138DR2G?
- What package types are available for the MC74LCX138DR2G?
- Is the MC74LCX138DR2G RoHS compliant?
