Document
DATASHEET
Radiation Hardened 30V 16-Channel Analog Multiplexer
ISL71840SEH
The ISL71840SEH is a radiation hardened, 16-Channel high ESD protected multiplexer that is fabricated using Intersil’s proprietary P6SOI (Silicon On Insulator) process technology to mitigate single-event effects and total ionizing dose. It operates with a dual supply voltage ranging from ±10.8V to ±16.5V. It has a 4-bit address plus an enable pin that can be driven with adjustable logic thresholds to conveniently select 1 of 16 available channels. An inactive channel is separated from an active channel by a high impedance, which inhibits any interaction between them.
The ISL71840SEH’s low rON allows for improved signal integrity and reduced power losses. The ISL71840SEH is also designed for cold sparing making it excellent for high reliability applications that have redundancy requirements. It is designed to provide a high impedance to the analog source in a powered off condition, making it easy to add additional backup devices without loading signal sources. The ISL71840SEH also incorporates input analog overvoltage protection, which will disable the switch to protect downstream devices.
The ISL71840SEH is available in a 28 Ld CDFP or die form and operates across the extended temperature range of -55°C to +125°C.
There is also a 32-Channel version available called the ISL71841SEH offered in a 48 Ld CQFP, please refer to the ISL71841SEH datasheet for more information. For a list of differences please refer to Table 1 on page 3.
Related Literature
• UG028, “ISL71840SEHEV1Z Evaluation Board User Guide”
• TR004, “Single Event Effects (SEE) Testing of the ISL71840SEH 16:1 30V Mux”
Features
• DLA SMD# 5962-15219
• Fabricated using P6SOI process technology - Provides latch-up immunity
• ESD protection 8kV (HBM)
• Rail-to-rail operation
• Overvoltage protection
• Low rON. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <500Ω (typ) • Flexible split rail operation
- Positive supply above GND (V+) . . . . . . . +10.8V to +16.5V - Negative supply below GND (V-) . . . . . . . . -10.8V to -16.5V
• Adjustable logic threshold control with VREF Pin
• Cold sparing capable (from ground). . . . . . . . . . . . . . . . .±25V
• Analog overvoltage range (from ground) . . . . . . . . . . . . .±35V
• Off switch leakage . . . . . . . . . . . . . . . . . . . . . . . . 100nA (max)
• Transition times (TR, TF). . . . . . . . . . . . . . . . . . . . . . 500ns (typ) • Break-before-make switching
• Grounded metal lid (internally connected)
• Operating temperature range. . . . . . . . . . . .-55°C to +125°C
• Radiation tolerance - High dose rate (50-300rad(Si)/s). . . . . . . . . . . 100krad(Si) - Low dose rate (0.01rad(Si)/s) . . . . . . . . . . . . 100krad(Si)* - SEB LETTH . . . . . . . . . . . . . . . . . . . . . . . . .86.4 MeV•cm2/mg
* Product capability established by initial characterization. All subsequent lots are assurance tested to 50krad (0.01rad(Si)/s) wafer-by-wafer.
ISL71840SEH
IN01
IN02
IN03 . . .
IN16
OUT
ADC
4
ADDRESS EN
FIGURE 1. TYPICAL APPLICATION
June 15, 2015 FN8734.0
1
600
500 400 +25°C
+125°C
rDS(ON) (Ω)
300
200
100 -55°C
0 -20 -15 -10 -5.0 0 5.0 10 15 20 SWITCH INPUT VOLTAGE (V)
FIGURE 2. rDS(ON) Vs POWER SUPPLY ACROSS SWITCH INPUT COMMON MODE VOLTAGE AT +25°C
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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ISL71840SEH
Table of Contents
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pin Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Pin Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Thermal Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Recommended Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical Specifications (15V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..