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MAX4631, MAX4632, MAX4633
Fault-Protected, High-Voltage, Dual Analog Switches
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Status
| Part Number |
Status |
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MAX4631
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Active: In Production. |
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MAX4632
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Active: In Production. |
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MAX4633
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Active: In Production. See Ordering Information for details. |
Description
The MAX4631/MAX4632/MAX4633 high-voltage, dual analog switches are pin compatible with the industry-standard DG401/DG403/DG405. They upgrade the existing devices with fault-protected inputs and rail-to-rail signal handling capabilities. The MAX4631/MAX4632/MAX4633's normally open (NO) and normally closed (NC) terminals are protected from overvoltage faults up to 36V during power-up or power-down. During a fault condition, these terminals become open circuit and only nanoamperes of leakage current flow from the source, yet the switch output (COM_) continues to furnish up to 18mA of the appropriate polarity supply voltage to the load. This ensures unambiguous rail-to-rail outputs when a fault begins and ends. On-resistance is 85Ω (max) at +25°C and is matched between switches to 6Ω (max). Off-leakage current is only 0.5nA at +25°C and 5nA at +85°C.
The MAX4631 has two NO single-pole/single-throw (SPST) switches. The MAX4632 has two NO/NC single-pole/double-throw (SPDT) switches. The MAX4633 has two NO double-pole/single-throw (DPST) switches.
These CMOS switches operate with dual power supplies ranging from ±4.5V to ±18V or a single supply between +9V and +36V. All digital inputs have +0.8V and +2.4V logic thresholds, ensuring both TTL- and CMOS-logic compatibility when using ±15V or a single +12V supply.
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Data Sheet
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Key Features
- Fault Protection
- ±40V with Power Off
- ±36V with ±15V Supplies (MAX4631/MAX4633)
- ±25V with ±15V Supplies (MAX4632)
- Rail-to-Rail Signal Handling
- No Power-Supply Sequencing Required
- All Switches Off with Power Off
- Output Clamped to Appropriate Supply Voltage During Fault Condition; No Transition Glitch
- 85Ω (max) Signal Paths with ±15V Supplies
- ±4.5V to ±18V Dual Supplies
- +9V to +36V Single Supply
- Low Power Consumption: <6mW
- Pin Compatible with Industry-Standard DG401/DG403/DG405
- TTL- and CMOS-Logic Compatible Inputs with Single +9V to +15V, or ±15V Supplies
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Applications/Uses
- Automated Test Equipment (ATE)
- Avionics
- Data Acquisition
- Industrial and Process Control Systems
- Redundant/Backup Systems
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Key Specifications:
| Switches and Multiplexers (Mid Voltage) |
| Part Number |
Functions |
Config. |
Channels |
Normal Position |
VSUPPLY (Single)
(V) |
VSUPPLY (Single)
(V) |
VSUPPLY (Dual)
(±V) |
VSUPPLY (Dual)
(±V) |
RON
(Ω) |
IL(OFF)
(nA) |
tON
(ns) |
tOFF
(ns) |
QINJECTION
(pC) |
CON
(pF) |
COFF
(pF) |
Budgetary Price |
| min |
max |
min |
max |
max |
max |
min |
max |
max |
max |
See Notes |
| MAX4631 |
Switch |
SPST |
2 |
Open |
9 |
36 |
4.5 |
18 |
85 |
0.5 |
500 |
400 |
10 |
22 |
18 |
$2.13 @1k |
| MAX4632 |
SPDT |
- |
$2.13 @1k |
| MAX4633 |
DPST |
Open |
$2.13 @1k |
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See All Switches and Multiplexers (Mid Voltage) (305)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Pin Configuration
Didn't Find What You Need?
Information Index
Document Ref.: 19-1515
Rev 0;
1999-07-01
This page last modified: 2009-10-27
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