Overview
The MC74LCX245DTG is a high-performance, non-inverting octal transceiver produced by onsemi. This device operates from a 1.65 to 5.5V supply and features high impedance TTL compatible inputs, which significantly reduce current loading to input drivers. The TTL compatible outputs offer improved switching noise performance, making it suitable for memory address driving and all TTL level bus-oriented transceiver applications.
Key Specifications
| Parameter | Value | Condition | Unit |
|---|---|---|---|
| VCC (DC Supply Voltage) | −0.5 to +6.5 | V | |
| VI (DC Input Voltage) | −0.5 to +6.5 | V | |
| VO (DC Output Voltage) | −0.5 to VCC + 0.5 | Active-Mode (High or Low State) | V |
| IO (DC Output Source/Sink Current) | ±50 | mA | |
| ICC (DC Supply Current Per Supply Pin) | ±100 | mA | |
| TSTG (Storage Temperature Range) | −65 to +150 | °C | |
| MSL (Moisture Sensitivity Level) | 1 | ||
| tpd Max (Propagation Delay) | 7 ns | VCC = 3.0 V | ns |
| IO Max (Output Current) | 24 mA | VCC = 3.0 V | mA |
| 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
- 24 mA balanced output sink and source capability at VCC = 3.0 V
- Near zero static supply current in all three logic states (10 µA) substantially reduces system power requirements
- Latchup performance exceeds 100 mA
- ESD performance: Human Body Model > 2000 V, Machine Model > 200 V
- Pb-free, halogen-free/BFR-free, and RoHS compliant
Applications
The MC74LCX245DTG is suitable for a variety of applications, including memory address driving and all TTL level bus-oriented transceiver applications. Its 5V tolerant interface capability makes it compatible with 5V devices, and its support for live insertion and withdrawal enhances its usability in dynamic systems.
Q & A
- What is the operating voltage range of the MC74LCX245DTG?
The MC74LCX245DTG operates from a 1.65 to 5.5V supply. - What is the current drive capability of the MC74LCX245DTG?
The current drive capability is 24 mA at both A and B ports at VCC = 3.0 V. - 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 MC74LCX245DTG compatible with 5V devices?
Yes, the MC74LCX245DTG has 5V tolerant inputs and outputs, allowing it to be safely driven from 5V devices if VCC is less than 5.0V. - What are the ESD performance specifications of the MC74LCX245DTG?
The ESD performance specifications include Human Body Model > 2000 V and Machine Model > 200 V. - Is the MC74LCX245DTG RoHS compliant?
Yes, the MC74LCX245DTG is Pb-free, halogen-free/BFR-free, and RoHS compliant. - What is the moisture sensitivity level of the MC74LCX245DTG?
The moisture sensitivity level is 1. - What is the storage temperature range for the MC74LCX245DTG?
The storage temperature range is −65 to +150°C. - What package types are available for the MC74LCX245DTG?
The MC74LCX245DTG is available in TSSOP-20, SOIC-20W, and QFN-20 packages.
