Features
- Electrically screened to SMD# 5962-96663
- QML qualified per MIL-PRF-38535 requirements
- 1.2 Micron radiation hardened CMOS
- Total dose up to: 300kRAD(Si)
- Latchup free
- EIA RS-422 compatible outputs (except for IOS)
- CMOS inputs
- High impedance outputs when disabled or powered down
- Low power dissipation: 2.75mW standby (max)
- Single 5V supply
- Low output impedance: 10Ω or less
- Full -55°C to +125°C military temperature range
Description
The Intersil HS-26C31RH, HS-26C31EH are quad differential line drivers designed for digital data transmission over balanced lines and meets the requirements of EIA standard RS-422. Radiation hardened CMOS processing assures low power consumption, High-Speed, and reliable operation in the most severe radiation environments. The HS-26C31RH, HS-26C31EH accept CMOS levels and converts them to RS-422 compatible outputs. These circuits uses special outputs that enable the drivers to power-down without loading down the bus. Enable and disable pins allow several devices to be connected to the same data source and addressed independently. Specifications for Rad Hard QML devices are controlled by the Defense Logistics Agency Land and Maritime (DLA). The SMD numbers listed here must be used when ordering. Detailed Electrical Specifications for these devices are contained in SMD 5962-96663.
Parameters
| Attributes | Value |
|---|---|
| Rating | Space |
| Input High Voltage Range | 0.7 VDD |
| Input Low Voltage Range | 0.3 VDD |
| Supply Voltage (min) (V) | 4.5 - 4.5 |
| Supply Voltage (max) (V) | 5.5 - 5.5 |
| Temp. Range (°C) | -55 to +125°C |
| TID HDR (krad(Si)) | 300 |
| DSEE (MeV·cm2/mg) | 100 |
| Flow | RH Hermetic |
| Qualification Level | Class Q, Class V, EM |
| Die Sale Availability? | Yes |
| PROTO Availability? | Yes |
Applications
- Line transmitter for MIL-STD-1553 serial data bus
Knowledge Base
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What happens to the HS-26C31RH and HS-26C32RH for the following failure modes?
Question: I am analyzing an electronics design using the HS-26C31 line driver and HS-26C32 line receiver and I would like to study the failure mode of these chips. For each case, will the parts be damaged or is there protection built into the parts? If the part is ...
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Will HS-26C31xH communicate with HS-26C32xH with different ground potentials?
... to +7V/-4V difference can exist between the grounds. There are 2 application notes for our RS-422 rad hard parts. AN9519: Using the HS-26C31RH, HS-26CT31RH Radiation Hardened RS-422 Line Driver AN9520: Using the HS-26C32RH, HS-26CT32RH Radiation Hardened RS-422 Line Receiver This excerpt ...
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Hi-Rel RS-422 Max Data Rate
... the equation and some example calculations: Maximum allowable frequency can be calculated from the following equation: f=1/(tr+tplh+tpwh+tphl+tf+tpwl)HS-26C31RH fmax=Frequencytr=Rise time (10ns from datasheet))tplh=Low to high propagation delay (22ns from datasheet))tpwh=High pulse width (Assume 10ns)tphl ...
Jul 11, 2025
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