Overview
The MC74LCX245DTR2G is a high-performance, non-inverting octal transceiver produced by onsemi. This component operates from a 1.65 to 5.5V supply voltage, making it versatile for various applications. It features high impedance TTL compatible inputs, which significantly reduce current loading to input drivers, and TTL compatible outputs that enhance switching noise performance. The MC74LCX245 is suitable for memory address driving and all TTL level bus-oriented transceiver applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC (Supply Voltage) | 1.65 | - | 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 |
| IO (DC Output Source/Sink Current) | - | - | ±50 | mA |
| ICC (DC Supply Current per Supply Pin) | - | - | ±100 | mA |
| tpd (Propagation Delay) | - | - | 7 | ns |
| Package Type | - | - | TSSOP-20 | - |
Key Features
- Designed for 1.65 to 5.5V VCC operation
- 5V tolerant interface capability with 5V TTL logic
- Supports live insertion and withdrawal
- IOFF specification guarantees high impedance when VCC = 0V
- LVTTL and LVCMOS compatible
- 24mA balanced output sink and source capability at VCC = 3.0V
- Near zero static supply current in all three logic states (10µA) substantially reduces system power requirements
- Latchup performance exceeds 100mA
- ESD performance: Human Body Model >2000V, Machine Model >200V
- Pb-free, halogen-free/BFR-free, and RoHS compliant
Applications
The MC74LCX245DTR2G is suitable for a variety of applications, including:
- Memory address driving
- TTL level bus-oriented transceiver applications
- Systems requiring live insertion and withdrawal capabilities
- Low-power systems due to its near zero static supply current
- Automotive and other applications requiring unique site and control change requirements (AEC-Q100 qualified and PPAP capable)
Q & A
- What is the operating voltage range of the MC74LCX245DTR2G?
The MC74LCX245DTR2G operates from a 1.65 to 5.5V supply voltage.
- What is the current drive capability of the MC74LCX245DTR2G?
The current drive capability is 24mA at both A and B ports.
- How does the Transmit/Receive (T/R) input function?
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 when it is HIGH?
When the Output Enable input is HIGH, it disables both A and B ports by placing them in a HIGH Z condition.
- Is the MC74LCX245DTR2G compatible with 5V TTL logic?
Yes, the MC74LCX245DTR2G has 5V tolerant interface capability, allowing it to be safely driven from 5V devices if VCC is less than 5.0V.
- What are the ESD performance specifications of the MC74LCX245DTR2G?
The ESD performance specifications include Human Body Model >2000V and Machine Model >200V.
- Is the MC74LCX245DTR2G RoHS compliant?
Yes, the MC74LCX245DTR2G is Pb-free, halogen-free/BFR-free, and RoHS compliant.
- What is the latchup performance of the MC74LCX245DTR2G?
The latchup performance exceeds 100mA.
- What is the typical propagation delay of the MC74LCX245DTR2G?
The typical propagation delay is 7ns.
- What package types are available for the MC74LCX245DTR2G?
The MC74LCX245DTR2G is available in TSSOP-20, SOIC-20W, and QFN-20 packages.
