Rad-Hard 16 Channel CMOS Analog Multiplexer with
High-Z Analog Input Protection
HS-1840ARH, HS-1840AEH,
HS-1840BRH
TheHS-1840ARH, HS-1840AEH, HS-1840BRH are radiation hardened,
monolithic 16 channel multiplexers constructed with the Intersil Rad-
Hard Silicon Gate, bonded wafer, Dielectric Isolation process. They are
designed to provide a high input impedance to the analog source if
device power fails (open), or the analog signal voltage inadvertently
exceeds the supply by up to
±35V,
regardless of whether the device is
powered on or off. Excellent for use in redundant applications, since the
secondary device can be operated in a standby unpowered mode
affording no additional power drain. More significantly, a very high
impedance exists between the active and inactive devices preventing
any interaction. One of sixteen channel selections is controlled by a 4-bit
binary address plus an Enable-Inhibit input which conveniently controls
the ON/OFF operation of several multiplexers in a system. All inputs
have electrostatic discharge protection. The HS-1840ARH,
HS-1840AEH, HS-1840BRH are processed and screened in full
compliance with MIL-PRF-38535 and QML standards. The devices are
available in a 28 Ld SBDIP and a 28 Ld Ceramic Flatpack.
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 5962-95630. A “hot-link” is provided on our homepage for
downloading:
Features
• Electrically Screened to SMD # 5962-95630
• QML Qualified per MIL-PRF-38535 Requirements
• Pin-to-Pin for Intersil’s HS-1840RH and HS-1840/883S
• Improved Radiation Performance
- Gamma Dose (γ) 3x10
5
RAD(Si)
• Improved r
DS(ON)
Linearity
• Improved Access Time 1.5µs (Max) Over Temp and Post Rad
• High Analog Input Impedance 500MΩ During Power Loss (Open)
•
±35V
Input Overvoltage Protection (Power On or Off)
• Dielectrically Isolated Device Islands
• Excellent in Hi-Rel Redundant Systems
• Break-Before-Make Switching
• No Latch-Up
November 17, 2011
FN4355.4
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
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