Overview
The ST26C32AB, produced by STMicroelectronics, is a quad differential line receiver designed to meet the requirements of EIA standards RS-422 and RS-423 for both balanced and unbalanced digital data transmission. This component retains the low power characteristics of CMOS technology, making it suitable for a variety of applications where power efficiency is crucial. The ST26C32AB features an input sensitivity of 200 mV over a common mode input voltage range of ±7 V and includes internal pull-up and pull-down resistors to prevent output oscillation on unused channels. It also provides an enable and disable function for all four receivers and has 3-state outputs with a 6 mA source and sink capability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VCC) | 4.5 to 5.5 | V |
| Operating Temperature Range (TA) | -40 to +85 | °C |
| Input Sensitivity | ±200 mV | mV |
| Common Mode Input Voltage Range (VCM) | ±7 V | V |
| Differential Input Voltage (VDIFF) | ±14 V | V |
| Typical Propagation Delay (tPLH, tPHL) | 19 ns | ns |
| Typical Input Hysteresis (VHYST) | 60 mV | mV |
| Output Rise and Fall Times (tRISE, tFALL) | 4 to 9 ns | ns |
| Maximum Current per Output (IOMAX) | ±25 mA | mA |
| Storage Temperature Range (TSTG) | -65 to +150 | °C |
Key Features
- CMOS design for low power consumption
- ±0.2 V sensitivity over input common mode voltage range
- Typical propagation delay of 19 ns
- Typical input hysteresis of 60 mV
- Input will not load line when VCC = 0 V
- Meets the requirements of EIA standard RS-422, RS-423
- 3-state outputs for connection to system buses
- Internal pull-up and pull-down resistors to prevent output oscillation on unused channels
- Enable and disable function for all four receivers
- Available in surface mount packages (SO-16, TSSOP16)
Applications
The ST26C32AB is suitable for various applications requiring balanced and unbalanced digital data transmission, including:
- Industrial automation and control systems
- Telecommunications equipment
- Data communication networks
- Medical devices requiring low power and high reliability
- Aerospace and defense systems where robustness and compliance with standards are critical
Q & A
- What is the primary function of the ST26C32AB?
The ST26C32AB is a quad differential line receiver designed to meet the RS-422 and RS-423 standards for balanced and unbalanced digital data transmission. - What is the input sensitivity of the ST26C32AB?
The input sensitivity is ±200 mV over a common mode input voltage range of ±7 V. - What are the typical propagation delay and input hysteresis of the ST26C32AB?
The typical propagation delay is 19 ns, and the typical input hysteresis is 60 mV. - Does the ST26C32AB load the input line when VCC = 0 V?
No, the input will not load the line when VCC = 0 V. - What are the available package types for the ST26C32AB?
The ST26C32AB is available in SO-16 and TSSOP16 surface mount packages. - What is the maximum current per output of the ST26C32AB?
The maximum current per output is ±25 mA. - What is the operating temperature range of the ST26C32AB?
The operating temperature range is -40 to +85 °C. - Does the ST26C32AB have internal pull-up and pull-down resistors?
Yes, it features internal pull-up and pull-down resistors to prevent output oscillation on unused channels. - What is the storage temperature range for the ST26C32AB?
The storage temperature range is -65 to +150 °C. - What are some common applications for the ST26C32AB?
Common applications include industrial automation, telecommunications, data communication networks, medical devices, and aerospace and defense systems.
