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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | 74ALS |
| 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 | 15mA, 24mA |
| Voltage - Supply | 4.5V ~ 5.5V |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 20-SOIC (0.209", 5.30mm Width) |
| Supplier Device Package | 20-SO |
| ROHS |  |
The SN74ALS620ANS is an inverting transceiver from Texas Instruments, designed for bidirectional data communication in 5V systems. As part of the 74ALS family, it offers low power consumption with high speed. This single-channel device features 3-State outputs for bus sharing. It operates from 4.5V to 5.5V and can source 15mA or sink 24mA. Packaged in a 20-SOIC, it is commonly used in microprocessor data buses, memory interfaces, and industrial control systems where signal inversion and buffering are required.
- Inverting Transceiver Function: Combines bidirectional data flow with signal inversion, saving board space.
- High 24mA Sink Current: Ensures reliable drive for bus lines and capacitive loads.
- Low-Power 74ALS Technology: Reduces system power consumption and heat generation.
- 3-State Outputs: Facilitates safe bus sharing in multi-master systems.
Bidirectional Data Bus Transceiver
The SN74ALS620ANS is ideal for connecting two data buses with signal inversion. In microprocessor systems, it allows data to flow in both directions between the CPU and memory or peripherals, with the direction controlled by a separate line.
Signal Inversion and Buffering
In systems where an inverted signal is required, this transceiver provides both inversion and buffering in a single device. This simplifies PCB layout by eliminating separate inverter and buffer ICs.
Memory Read/Write Interface
In memory systems, this transceiver can be used to interface the data bus between the memory controller and DRAM or SRAM. The 3-State outputs are essential for read/write operations where the bus direction changes frequently.
Industrial Sensor Bus
In industrial control networks, this transceiver can buffer and invert signals on a sensor bus. The 24mA sink capability ensures reliable communication over longer cable runs.
Test Equipment Channel Switching
In ATE systems, this transceiver can route test signals to different measurement points. The 3-State outputs allow for efficient multiplexing of test channels.
Legacy System Interfacing
When interfacing with older systems that require inverted logic, this transceiver provides the necessary signal conditioning. Its TTL-compatible inputs and outputs ensure seamless integration.
- Q: What logic family does the SN74ALS620ANS belong to?
- A: It is part of the 74ALS (Advanced Low-power Schottky) family, known for low power and high speed.
- Q: What is the function of this IC?
- A: It is an inverting transceiver with 1 channel, allowing bidirectional data flow with signal inversion.
- Q: What type of outputs does it have?
- A: It features 3-State outputs, enabling connection to shared bidirectional buses.
- Q: What is the supply voltage range?
- A: It operates from 4.5V to 5.5V, compatible with standard 5V TTL systems.
- Q: What is the output current capability?
- A: It can source 15mA and sink 24mA, providing robust drive for bus lines.
- Q: What is the temperature range?
- A: It is rated for 0°C to 70°C, suitable for commercial applications.
SN74ALS620ANS.pdf
- Q: What logic family does the SN74ALS620ANS belong to?
- A: It is part of the 74ALS (Advanced Low-power Schottky) family, known for low power and high speed.
- Q: What is the function of this IC?
- A: It is an inverting transceiver with 1 channel, allowing bidirectional data flow with signal inversion.
- Q: What type of outputs does it have?
- A: It features 3-State outputs, enabling connection to shared bidirectional buses.
- Q: What is the supply voltage range?
- A: It operates from 4.5V to 5.5V, compatible with standard 5V TTL systems.
- Q: What is the output current capability?
- A: It can source 15mA and sink 24mA, providing robust drive for bus lines.
- Q: What is the temperature range?
- A: It is rated for 0°C to 70°C, suitable for commercial applications.