Overview
The SN75182NSR, produced by Texas Instruments, is a dual differential line receiver designed to sense small differential signals in the presence of large common-mode noise. This device is part of the SN75182 series, which provides TTL-compatible output signals based on the polarity of the differential input voltage. Although the SN75182 is now obsolete and not recommended for new designs, it remains relevant for existing systems and maintenance purposes.
Key Specifications
| Parameter | Min | Nom | Max | Unit |
|---|---|---|---|---|
| Supply Voltage, VCC | 4.5 | 5 | 5.5 | V |
| Common-Mode Input Voltage, VIC | ±15 | ±15 | ±15 | V |
| High-Level Strobe Input Voltage, VIH(STRB) | 2.1 | 5.5 | V | |
| Low-Level Strobe Input Voltage, VIL(STRB) | 0 | 0.9 | V | |
| High-Level Output Current, IOH | -400 | µA | ||
| Low-Level Output Current, IOL | 16 | mA | ||
| Operating Free-Air Temperature, TA | 0 | 70 | °C | |
| Propagation Delay Time, Low- to High-Level Output from Differential Input | 18 | 40 | ns | |
| Propagation Delay Time, High- to Low-Level Output from Differential Input | 31 | 45 | ns |
Key Features
- Dual Differential Line Operation: The SN75182NSR operates with dual differential input channels, providing robust signal reception.
- TTL Compatibility: The device outputs TTL-compatible signals, making it compatible with a wide range of digital systems.
- Wide Common-Mode and Differential Input Voltage Range: It can handle ±15-V common-mode and differential input voltages, ensuring operation in noisy environments.
- Individual Channel Strobes: Each channel has a strobe input that can disable the receiver and force the output to a high level when in the low state.
- Built-In Optional Line-Termination Resistor: The device includes optional line-termination resistors for easier circuit design.
- Frequency Response Control: The frequency response of each channel can be controlled using a single external capacitor to provide immunity to differential noise spikes.
- Military and Commercial Temperature Ranges: The SN55182 is rated for –55°C to 125°C, while the SN75182 is rated for 0°C to 70°C, catering to various environmental conditions.
Applications
- Industrial Control Systems: Used in industrial environments where differential signals need to be received reliably in the presence of noise.
- Telecommunications: Suitable for telecommunications equipment where differential signaling is common.
- Automotive Systems: Can be used in automotive systems that require robust signal reception in noisy environments.
- Data Transmission Systems: Ideal for data transmission systems that use differential signaling to improve signal integrity.
Q & A
- What is the primary function of the SN75182NSR?
The primary function of the SN75182NSR is to receive and interpret differential signals in the presence of large common-mode noise, providing TTL-compatible output signals.
- What are the operating temperature ranges for the SN75182NSR?
The SN75182NSR operates from 0°C to 70°C.
- What is the common-mode input voltage range for the SN75182NSR?
The common-mode input voltage range is ±15 V.
- How can the frequency response of the SN75182NSR be controlled?
The frequency response can be controlled using a single external capacitor to provide immunity to differential noise spikes.
- What is the purpose of the strobe input on the SN75182NSR?
The strobe input can disable the receiver and force the output to a high level when in the low state.
- Is the SN75182NSR still recommended for new designs?
No, the SN75182NSR is not recommended for new designs as it is now obsolete.
- What are the typical propagation delay times for the SN75182NSR?
The propagation delay times are typically 18-40 ns for low- to high-level output and 31-45 ns for high- to low-level output from the differential input.
- Can the SN75182NSR be used in high-noise environments?
Yes, the SN75182NSR is designed to operate in high-noise environments with its ability to handle ±15-V common-mode and differential input voltages.
- What is the supply voltage range for the SN75182NSR?
The supply voltage range is 4.5 V to 5.5 V.
- Does the SN75182NSR have built-in line-termination resistors?
Yes, the device includes optional built-in line-termination resistors.
