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MAX4545, MAX4546, MAX4547
Quad/Dual, Low-Voltage, Bidirectional RF Video Switches
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Status
Active: In Production.
Description
The MAX4545/MAX4546/MAX4547 are low-voltage T-switches designed for switching RF and video signals from DC to 300MHz in 50Ω and 75Ω systems. The MAX4545 contains four normally open single-pole/single-throw (SPST) switches. The MAX4546 contains two dual SPST switches (one normally open, one normally closed.) The MAX4547 contains two single-pole/double-throw (SPDT) switches.
Each switch is constructed in a "T"configuration, ensuring excellent high-frequency off isolation and crosstalk of -80dB at 10MHz. They can handle rail-to-rail analog signals in either direction. On-resistance (20Ω max) is matched between switches to 1Ω max and is flat (0.5Ω max) over the specified signal range, using ±5V supplies. The off leakage current is less than 5nA at +25°C and 50nA at +85°C.
These CMOS switches can operate with dual power supplies ranging from ±2.7V to ±6V or a single supply between +2.7V and +12V. All digital inputs have 0.8V/2.4V logic thresholds, ensuring both TTL- and CMOS-logic compatibility when using ±5V or a single +5V supply.
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Data Sheet
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Key Features
- Low 50Ω Insertion Loss: -1dB at 100MHz
- High 50Ω Off Isolation: -80dB at 10MHz
- Low 50Ω Crosstalk: -80dB at 10MHz
- DC to 300MHz -3dB Signal Bandwidth
- 20Ω Signal Paths with ±5V Supplies
- 1Ω Signal-Path Matching with ±5V Supplies
- 0.5Ω Signal-Path Flatness with ±5V Supplies
- ±2.7V to ±6V Dual Supplies
- +2.7V to +12V Single Supply
- Low Power Consumption: < 1µW
- Rail-to-Rail Bidirectional Signal Handling
- Pin Compatible with Industry-Standard DG540, DG542, DG643
- > 2kV ESD Protection per Method 3015.7
- TTL/CMOS-Compatible Inputs with Single +5V or ±5V
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Applications/Uses
- Automated Test Equipment (ATE)
- High-Speed Data Acquisition
- Networking
- RF Switching
- Test Equipment
- Video Signal Routing
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Key Specifications:
| Audio/Video Routing (Unbuffered) |
| Part Number |
Functions |
Config. |
RON
(Ω) |
Interface |
ILEAK(OFF)
(nA) |
tON
(ns) |
Off Iso.
(dB) |
Crosstalk
(dB) |
VSUPPLY
(V) |
VSUPPLY (Dual)
(±V) |
Budgetary Price |
| max |
max |
min |
@ Freq. |
@ Freq. |
Dual |
See Notes |
| MAX4545 |
Switch |
4 x SPST NO |
20 |
Parallel |
5 |
150 |
-80@10MHz |
-88@10MHz |
2.7 to 12.0 |
2.7 to 6 |
$2.59 @1k |
| MAX4546 |
Switch |
2 x SPST NO/NC |
-80@10MHz |
-80@10MHz |
$2.34 @1k |
| MAX4547 |
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-82@10MHz |
-84@10MHz |
$2.34 @1k |
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See All Audio/Video Routing (Unbuffered) (27)
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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 bidirectional RF/video T-switches; single supply: +2.7V to +12.0V
Didn't Find What You Need?
Information Index
Document Ref.: 19-1232
Rev 0;
1997-06-01
This page last modified: 2009-11-06
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