Overview
The MC74LCX245DT, produced by onsemi, is a high-performance, non-inverting octal transceiver designed to operate within a voltage range of 1.65 to 5.5V. This component is optimized for low-voltage CMOS applications and features high impedance TTL-compatible inputs, which significantly reduce current loading on input drivers. The outputs are also TTL-compatible, offering improved switching noise performance. The MC74LCX245DT is suitable for various applications, including memory address driving and all TTL level bus-oriented transceiver uses.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC (Supply Voltage) | 1.65 | 2.5, 3.3 | 5.5 | V |
| VI (Digital Input Voltage) | 0 | 5.5 | V | |
| VO (Output Voltage) | 0 | VCC | V | |
| TA (Operating Free-Air Temperature) | -55 | 125 | °C | |
| ICC (Quiescent Supply Current) | 10 | μA | ||
| Current Drive Capability | 24 mA | A |
Key Features
- High impedance TTL-compatible inputs to reduce current loading on input drivers.
- TTL-compatible outputs for improved switching noise performance.
- 5V tolerant interface capability with 5V TTL logic.
- Supports live insertion and withdrawal.
- High impedance when VCC = 0V (IOFF specification).
- LVTTL and LVCMOS compatible.
- 24mA balanced output sink and source capability.
- Near zero static supply current in all three logic states (substantially reduces system power requirements).
- Latchup performance exceeds 500mA.
- ESD performance: Human Body Model >2000V; Machine Model >200V.
- Pb-Free packages available.
Applications
The MC74LCX245DT is suitable for a variety of applications, including:
- Memory address driving.
- All TTL level bus-oriented transceiver applications.
- Low-voltage CMOS systems requiring high-performance, non-inverting data transmission.
Q & A
- What is the operating voltage range of the MC74LCX245DT?
The MC74LCX245DT operates within a voltage range of 1.65 to 5.5V.
- What type of inputs does the MC74LCX245DT have?
The MC74LCX245DT has high impedance TTL-compatible inputs.
- What is the current drive capability of the MC74LCX245DT?
The current drive capability is 24mA at both A and B ports.
- How does the Transmit/Receive (T/R) input function?
The Transmit/Receive 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 MC74LCX245DT compatible with 5V TTL logic?
- What are the ESD performance specifications of the MC74LCX245DT?
The ESD performance specifications are Human Body Model >2000V and Machine Model >200V.
- Does the MC74LCX245DT support live insertion and withdrawal?
- What is the latchup performance of the MC74LCX245DT?
The latchup performance exceeds 500mA.
- Are Pb-Free packages available for the MC74LCX245DT?
