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| Product attributes | Property Value |
| Manufacturer | Advanced Micro Devices |
| Product Series | |
| Packaging | Bulk | |
| Part Status | Active |
| Logic Type | Transceiver, Inverting |
| Number of Elements | 1 |
| Number of Bits per Element | 8 |
| Input Type | - |
| Output Type | 3-State |
| Current - Output High, Low | 3mA, 24mA |
| Voltage - Supply | 4.5V ~ 5.5V |
| Operating Temperature | -55°C ~ 125°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 20-CLCC |
| Supplier Device Package | 20-CLCC |
The AM2946/B2A is a single-channel inverting transceiver from Advanced Micro Devices, designed for bidirectional 5V logic communication. It operates from 4.5V to 5.5V and provides 3mA source and 24mA sink current, enabling robust driving of capacitive loads and TTL inputs. The 3-State outputs allow multiple devices to share a data bus safely. Packaged in a ceramic 20-CLCC, it operates from -55°C to 125°C, making it ideal for military, aerospace, and industrial applications. Typical uses include microprocessor data buses, level translation, and high-current peripheral driving.
- High Sink Current (24mA): Drives heavy loads like relays and LED arrays directly, reducing external components.
- Bidirectional 3-State Operation: Enables efficient data bus sharing without contention.
- Military Temperature Range: Reliable from -55°C to 125°C for harsh environments.
- Ceramic Hermetic Package: Provides protection against moisture and mechanical stress.
Bidirectional Data Bus for 5V Microprocessors
The 3-State outputs and inverting transceiver function allow the AM2946/B2A to connect a CPU data bus to memory or peripherals, with direction controlled by a DIR pin.
Level Shifting Between TTL and CMOS
With 24mA sink capability, it can drive CMOS inputs while accepting TTL levels, bridging legacy 5V logic families.
High-Current Peripheral Driving
The 24mA sink current can directly drive relays, solenoids, or LED arrays through current-limiting resistors, reducing external driver ICs.
Military Avionics Data Multiplexing
The extended temperature range and ceramic package make it suitable for avionics data buses requiring MIL-STD-883 compliance.
Industrial Sensor Interfacing
Use the transceiver to read and write to industrial sensors over a shared 5V bus, with 3-State isolation when not active.
Redundant Communication Channels
In safety-critical systems, use two AM2946/B2A devices to create redundant inverted data paths, ensuring fault tolerance.
- Q: What is the logic family of the AM2946/B2A?
- A: It is a standard 5V TTL-compatible transceiver from Advanced Micro Devices, operating at 4.5V to 5.5V.
- Q: What is the function of this device?
- A: It is a single-channel inverting transceiver, allowing bidirectional data flow with inverted outputs.
- Q: How many channels does it have?
- A: The AM2946/B2A has 1 transceiver channel, with separate input and output pins for bidirectional communication.
- Q: What is the output type?
- A: It features 3-State outputs, enabling connection to shared bidirectional buses.
- Q: What are the voltage and current specifications?
- A: Supply voltage is 4.5V to 5.5V; output current is 3mA source and 24mA sink, suitable for driving heavy loads.
- Q: What package is available?
- A: It is offered in a 20-CLCC ceramic package, rated for -55°C to 125°C operation.
AM2946/B2A.pdf
- Q: What is the logic family of the AM2946/B2A?
- A: It is a standard 5V TTL-compatible transceiver from Advanced Micro Devices, operating at 4.5V to 5.5V.
- Q: What is the function of this device?
- A: It is a single-channel inverting transceiver, allowing bidirectional data flow with inverted outputs.
- Q: How many channels does it have?
- A: The AM2946/B2A has 1 transceiver channel, with separate input and output pins for bidirectional communication.
- Q: What is the output type?
- A: It features 3-State outputs, enabling connection to shared bidirectional buses.
- Q: What are the voltage and current specifications?
- A: Supply voltage is 4.5V to 5.5V; output current is 3mA source and 24mA sink, suitable for driving heavy loads.
- Q: What package is available?
- A: It is offered in a 20-CLCC ceramic package, rated for -55°C to 125°C operation.