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MAX349, MAX350
Serially Controlled, Low-Voltage, 8-Channel Dual 4-Channel Multiplexers
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Status
Active: In Production.
Description
The MAX349/MAX350 are 8-channel and dual 4-channel serially controlled multiplexers (muxes). These muxes conduct equally well in either direction. On-resistance (100Ω max) is matched between switches to 16Ω max and is flat (10Ω max) over the specified signal range.
These CMOS devices can operate continuously with dual power supplies ranging from ±2.7V to ±8V or a single supply between +2.7V and +16V. Each mux can handle rail-to-rail analog signals. The off-leakage current is only 0.1nA at +25°C or 5nA at +85°C.
Upon power-up, all switches are off and the internal shift registers are reset to zero.
The serial interface is compatible with SPI™/QSPI™ and Microwire™. Functioning as a shift register, it allows data (at DIN) to be clocked in synchronously with the rising edge of clock (SCLK). The shift register's output (DOUT) enables several MAX349s or MAX350s to be daisy chained.
All digital inputs have 0.8V or 2.4V logic thresholds, ensuring both TTL and CMOS-logic compatibility when using ±5V supplies or a single +5V supply.
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Data Sheet
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Key Features
- SPI/QSPI, Microwire-Compatible Serial Interface
- 8 Separately Controlled SPST Switches
- Single 8-to-1 Mux (MAX349)
- Dual 4-to-1 Mux (MAX350)
- 100Ω Signal Paths with ±5V Supplies
- Rail-to-Rail Signal Handling
- Asynchronous RESET Input
- ±2.7V to ±8V Dual Supplies
- +2.7V to +16V Single Supply
- > 2kV ESD Protection per Method 3015.7
- TTL/CMOS-Compatible Inputs (with +5V or ±5V Supplies)
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Applications/Uses
- Audio-Signal Routing
- Automated Test Equipment (ATE)
- Avionics
- Industrial and Process Control Systems
- Networking
- Serial Data-Acquisition Systems
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Key Specifications:
| Switches and Multiplexers (Mid Voltage) |
| Part Number |
Functions |
Config. |
Channels |
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 |
| MAX349 |
Mux |
8:1 |
1 |
2.7 |
16 |
2.7 |
8 |
100 |
0.1 |
275 |
150 |
10 |
8 |
2 |
$3.30 @1k |
| MAX350 |
4:1 |
2 |
$3.30 @1k |
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See All Switches and Multiplexers (Mid Voltage) (302)
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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
Notes and Comments
Low-voltage
Didn't Find What You Need?
Information Index
Document Ref.: 19-0451
Rev 1;
1998-10-01
This page last modified: 2009-11-10
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