Overview
The SN75161BDWRG4 is an octal general-purpose interface bus transceiver produced by Texas Instruments. This component is designed to meet the requirements of IEEE Standard 488-1978 (GPIB) and is part of the SN75161B series. It is a monolithic, high-speed, low-power Schottky device that provides bus-management and data-transfer signals between operating units of single- or multiple-controller instrumentation systems.
The SN75161B features eight driver-receiver pairs connected in a front-to-back configuration to form input/output (I/O) ports at both the bus and terminal sides. It includes power-up/down disable circuits to ensure glitch-free operation during power transitions.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Supply Voltage (VCC) | 4.75 | 5 | 5.25 | V |
| High-Level Input Voltage (VIH) | - | - | 2 | V |
| Low-Level Input Voltage (VIL) | 0.8 | - | - | V |
| High-Level Output Current (IOH) - Bus | -5.2 | - | - | mA |
| High-Level Output Current (IOH) - Terminal | -800 | - | - | µA |
| Low-Level Output Current (IOL) - Bus | 48 | - | - | mA |
| Low-Level Output Current (IOL) - Terminal | 16 | - | - | mA |
| Operating Free-Air Temperature (TA) | 0 | - | 70 | °C |
| Propagation Delay Time (tPLH) | 14 | 20 | - | ns |
| Receiver Hysteresis | 0.4 | 0.65 | - | V |
Key Features
- Meets IEEE Standard 488-1978 (GPIB) for instrumentation systems.
- 8-channel bidirectional transceivers for comprehensive data transfer.
- High-speed, low-power Schottky circuitry for efficient operation.
- Low power dissipation: 72 mW max per channel.
- Fast propagation times: 22 ns max.
- High-impedance pnp inputs and receiver hysteresis for noise immunity.
- Bus-terminating resistors provided on driver outputs.
- No loading of the bus when the device is powered down (VCC = 0).
- Power-up/down disable circuit for glitch-free operation.
- 3-state outputs to present high impedance to the terminal when disabled.
Applications
- Instrumentation systems requiring GPIB interface.
- Single- or multiple-controller configurations.
- Data acquisition and control systems.
- Automated test equipment.
- Industrial control and automation.
- Medical and scientific instruments.
Q & A
- What is the primary function of the SN75161B?
The SN75161B is an octal general-purpose interface bus transceiver designed to meet the requirements of IEEE Standard 488-1978 (GPIB) for instrumentation systems.
- What is the operating voltage range of the SN75161B?
The operating voltage range is from 4.75 V to 5.25 V.
- What is the maximum propagation delay time of the SN75161B?
The maximum propagation delay time is 20 ns.
- Does the SN75161B have power-up/down protection?
- What is the maximum low-level output current for the bus ports?
The maximum low-level output current for the bus ports is 48 mA.
- What is the operating temperature range of the SN75161B?
The operating temperature range is from 0°C to 70°C.
- Does the SN75161B have 3-state outputs?
- What is the purpose of the bus-terminating resistors on the driver outputs?
The bus-terminating resistors ensure that the bus is not loaded when the device is powered down.
- Can the SN75161B be used in multiple-controller configurations?
- What are some common applications of the SN75161B?
