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| Product attributes | Property Value |
| Manufacturer | National Semiconductor |
| Product Series | 54ACTQ |
| Packaging | Bulk | |
| Part Status | Active |
| Logic Type | Transceiver, Non-Inverting |
| Number of Elements | 1 |
| Number of Bits per Element | 8 |
| Input Type | - |
| Output Type | 3-State |
| Current - Output High, Low | 24mA, 24mA |
| Voltage - Supply | 4.5V ~ 5.5V |
| Operating Temperature | -55°C ~ 125°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 20-CLCC |
| Supplier Device Package | 20-LCCC (8.89x8.89) |
The 54ACTQ245LMQB-R is a high-performance non-inverting transceiver from the 54ACTQ logic family. It operates at 5V (4.5V to 5.5V) and provides 24mA output drive for robust bus communication. The 3-State outputs and bidirectional capability make it ideal for data bus applications. Packaged in a 20-CLCC ceramic package, it is designed for extreme temperature environments.
- Bidirectional Data Flow: Enables flexible bus communication with direction control.
- TTL-Compatible Inputs: Directly interfaces with legacy 5V TTL logic without extra circuitry.
- High Drive Current (24mA): Ensures reliable signal transmission over long bus lines.
- Ceramic 20-CLCC Package: Provides excellent thermal and mechanical stability for military use.
Bidirectional Bus Transceivers
Connect two data buses in a 5V system, allowing data transfer in either direction with direction control (DIR) and output enable (OE) pins.
Memory Interface Buffering
Buffer address/data lines between a microprocessor and SRAM or EEPROM, providing necessary drive strength and isolation.
Backplane Communication
Use in telecom or industrial backplanes to drive signals across long distances, with 24mA output capability ensuring signal integrity.
Mixed TTL/CMOS Systems
The TTL-compatible inputs allow direct interface with legacy TTL logic while providing CMOS-level outputs for newer devices.
High-Reliability Military Electronics
With a -55°C to 125°C range and ceramic packaging, it is suited for radar, avionics, and missile guidance systems.
Data Acquisition Systems
Buffer analog-to-digital converter outputs to a microcontroller bus, ensuring fast and reliable data transfer in harsh environments.
- Q: What is the logic family of the 54ACTQ245LMQB-R?
- A: It is part of the 54ACTQ family, featuring advanced CMOS technology with TTL-compatible inputs.
- Q: What function does this IC perform?
- A: It is a single-channel non-inverting transceiver, enabling bidirectional data flow between two buses.
- Q: How many channels are included?
- A: It has 1 channel, providing an 8-bit bidirectional interface (single byte-wide transceiver).
- Q: What is the output type?
- A: The outputs are 3-State, allowing the device to be disconnected from the bus when not active.
- Q: What is the supply voltage range?
- A: It operates from 4.5V to 5.5V, ideal for standard 5V TTL systems.
- Q: What package is used?
- A: It is available in a 20-CLCC (ceramic leadless chip carrier) package.
54ACTQ245LMQB-R.pdf
- Q: What is the logic family of the 54ACTQ245LMQB-R?
- A: It is part of the 54ACTQ family, featuring advanced CMOS technology with TTL-compatible inputs.
- Q: What function does this IC perform?
- A: It is a single-channel non-inverting transceiver, enabling bidirectional data flow between two buses.
- Q: How many channels are included?
- A: It has 1 channel, providing an 8-bit bidirectional interface (single byte-wide transceiver).
- Q: What is the output type?
- A: The outputs are 3-State, allowing the device to be disconnected from the bus when not active.
- Q: What is the supply voltage range?
- A: It operates from 4.5V to 5.5V, ideal for standard 5V TTL systems.
- Q: What package is used?
- A: It is available in a 20-CLCC (ceramic leadless chip carrier) package.