Overview
The SN75161B, specifically the SN75161BDWR, is an eight-channel, general-purpose interface bus transceiver manufactured by Texas Instruments. This monolithic, high-speed, low-power Schottky device is designed to meet the requirements of IEEE Standard 488-1978 (GPIB). It is part of a family of transceivers that provide bus-management and data-transfer signals between operating units of single- or multiple-controller instrumentation systems. When combined with the SN75160B octal bus transceiver, the SN75161B provides a complete 16-wire interface for the IEEE-488 bus.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC (DW) | - |
| Pins | 20 | - |
| Operating Temperature Range | 0 to 70 | °C |
| Supply Voltage, VCC | 4.75 to 5.25 | V |
| High-Level Input Voltage, VIH | 2 | V |
| Low-Level Input Voltage, VIL | 0.8 | V |
| High-Level Output Current, IOH (Bus Ports) | -5.2 | mA |
| Low-Level Output Current, IOL (Bus Ports) | 48 | mA |
| Propagation Time | 22 ns Max | - |
| Power Dissipation per Channel | 72 mW Max | - |
| Receiver Hysteresis | 650 mV Typ | - |
Key Features
- Meets IEEE Standard 488-1978 (GPIB)
- 8-Channel Bidirectional Transceivers
- Power-Up/Power-Down Protection (Glitch Free)
- Designed to Implement Control Bus Interface
- SN75161B Designed for Single Controller; SN75162B for Multiple Controllers
- High-Speed, Low-Power Schottky Circuitry
- Low Power Dissipation (72 mW Max Per Channel)
- Fast Propagation Times (22 ns Max)
- High-Impedance pnp Inputs
- Receiver Hysteresis (650 mV Typ)
- Bus-Terminating Resistors Provided on Driver Outputs
- No Loading of Bus When Device Is Powered Down (VCC = 0)
Applications
The SN75161B is primarily used in instrumentation systems that require communication over the IEEE-488 bus. It is suitable for single-controller systems and, when combined with the SN75160B, provides a complete interface solution. These transceivers are used in various industrial and laboratory settings where reliable, high-speed data transfer is necessary.
Q & A
- What is the SN75161B designed for? The SN75161B is designed to meet the requirements of IEEE Standard 488-1978 (GPIB) and is used in single-controller instrumentation systems.
- How many channels does the SN75161B have? The SN75161B has eight bidirectional transceiver channels.
- What is the operating temperature range of the SN75161B? The operating temperature range is from 0°C to 70°C.
- What type of circuitry does the SN75161B use? The SN75161B uses high-speed, low-power Schottky circuitry.
- What is the maximum propagation time of the SN75161B? The maximum propagation time is 22 ns.
- Does the SN75161B have power-up/power-down protection? Yes, it has glitch-free power-up/power-down protection.
- What is the purpose of the bus-terminating resistors on the driver outputs? The bus-terminating resistors provide a high impedance to the bus when the supply voltage VCC is 0.
- How much power does each channel of the SN75161B dissipate? Each channel dissipates a maximum of 72 mW.
- What is the receiver hysteresis of the SN75161B? The receiver hysteresis is typically 650 mV.
- Can the SN75161B handle multiple controllers? No, the SN75161B is designed for single-controller systems; the SN75162B is designed for multiple-controller systems.
