Overview
The MC74LCX245MNTWG, produced by onsemi, is a high-performance, non-inverting octal transceiver designed for low-voltage CMOS applications. This device operates from a supply voltage range of 1.65 to 5.5 V, making it versatile for various electronic systems. It features high impedance TTL-compatible inputs and outputs, which significantly reduce current loading on input drivers and improve switching noise performance. The MC74LCX245 is particularly suitable for memory address driving and all TTL level bus-oriented transceiver applications.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VCC (Supply Voltage) | Operating | 1.65 | - | 5.5 | V |
| VI (Digital Input Voltage) | - | 0 | - | 5.5 | V |
| VO (Output Voltage) | Active-Mode | 0 | - | VCC | V |
| TA (Operating Free-Air Temperature) | - | -55 | - | 125 | °C |
| ICC (Quiescent Supply Current) | VI = 5.5 V or GND | - | - | 10 | μA |
| IO (DC Output Source/Sink Current) | - | - | - | ±50 | mA |
| tPLH, tPHL (Propagation Delay, D to O) | VCC = 1.65 to 1.95 V | - | - | 10.3 | ns |
Key Features
- Designed for 1.65 to 5.5 V VCC operation
- 5 V tolerant - interface capability with 5 V TTL logic
- Supports live insertion and withdrawal
- IOFF specification guarantees high impedance when VCC = 0 V
- LVTTL and LVCMOS compatible
- 24 mA balanced output sink and source capability at VCC = 3.0 V
- Near zero static supply current in all three logic states, substantially reducing system power requirements
- Latchup performance exceeds 100 mA
- ESD performance: Human Body Model > 2000 V
- 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 MC74LCX245 is suitable for a variety of applications, including:
- Memory address driving
- TTL level bus-oriented transceiver applications
- Low-voltage CMOS systems requiring high performance and low power consumption
- Automotive and industrial systems where reliability and compliance with automotive standards are necessary
Q & A
- What is the operating voltage range of the MC74LCX245?
The MC74LCX245 operates from a supply voltage range of 1.65 to 5.5 V.
- What is the current drive capability of the MC74LCX245?
The MC74LCX245 has a current drive capability of 24 mA at both A and B ports at VCC = 3.0 V.
- How does the Transmit/Receive (T/R) input control data flow?
The Transmit/Receive (T/R) input determines the direction of data flow through the bi-directional transceiver. Transmit (active-HIGH) enables data from A ports to B ports, while Receive (active-LOW) enables data from B to A ports.
- What is the effect of the Output Enable input?
The Output Enable input, when HIGH, disables both A and B ports by placing them in a HIGH Z condition.
- Is the MC74LCX245 compatible with 5 V TTL logic?
- What are the ESD and latchup performance characteristics of the MC74LCX245?
The MC74LCX245 has an ESD performance of > 2000 V (Human Body Model) and latchup performance that exceeds 100 mA.
- Is the MC74LCX245 RoHS compliant?
- What are the packaging options for the MC74LCX245?
The MC74LCX245 is available in SOIC-20 WB, TSSOP-20, and QFN20 (2.5x4.5) packages.
- Is the MC74LCX245 suitable for automotive applications?
- What is the recommended operating temperature range for the MC74LCX245?
The recommended operating temperature range for the MC74LCX245 is -55°C to +125°C.
