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MAX3293, MAX3294, MAX3295
20Mbps, +3.3V, SOT23 RS-485/RS-422 Transmitters
±15kV ESD-Protected, 20Mbps +3.3V, SOT23 RS-485/RS-422 Transmitters
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Status
Active: In Production.
Description
The MAX3293/MAX3294/MAX3295 low-power, high-speed
transmitters for RS-485/RS-422 communication
operate from a single +3.3V power supply. These
devices contain one differential transmitter. The
MAX3295 transmitter operates at data rates up to
20Mbps, with an output skew of less than 5ns, and a
guaranteed driver propagation delay below 25ns. The
MAX3293 (250kbps) and MAX3294 (2.5Mbps) are
slew-rate limited to minimize EMI and reduce reflections
caused by improperly terminated cables.
The MAX3293/MAX3294/MAX3295 output level is guaranteed
at +1.5V with a standard 54Ω load, compliant with RS-485 specifications. The transmitter draws 5mA
of supply current when unloaded, and 1µA in low-power
shutdown mode (DE = GND).
Hot-swap circuitry eliminates false transitions on the data
cable during circuit initialization or connection to a live
backplane, and short-circuit current limiting and thermalshutdown
circuitry protect the driver against excessive
power dissipation.
The MAX3293/MAX3294/MAX3295 are offered in a
6-pin SOT23 package, and are specified over the
automotive temperature range.
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Data Sheet
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Key Features
- Space-Saving 6-Pin SOT23 Package
- 250kbps/2.5Mbps/20Mbps Data Rates Available
- Operate from a Single +3.3V Supply
- ESD Protection
- Slew-Rate Limited for Errorless Data
Transmission (MAX3293/MAX3294)
- 1µA Low-Current Shutdown Mode
- -7V to +12V Common-Mode Input Voltage Range
- Current Limiting and Thermal Shutdown for
Driver-Overload Protection
- Hot-Swap Inputs for Telecom Applications
- Automotive Temperature Range (-40°C to +125°C)
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Applications/Uses
- Automotive
- Clock Distribution
- Industrial Control
- Point-of-Sale Equipment
- RS-422/RS-485 Communications
- Security Equipment
- Telecom Equipment
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Key Specifications:
| RS-422/485 Line Driver/Receivers |
| Part Number |
Tx/Rx |
VSUPPLY
(V) |
ICC
(mA) |
Data Rate
(kbps) |
ESD Protect.
(±kV) |
Tx EN |
Rx EN |
ICC (Shutdn.)
(µA) |
Package/Pins |
Budgetary Price |
| typ |
min |
typ |
See Notes |
| MAX3293 |
1Tx |
3.3 |
1 |
250 |
9 |
Yes |
No |
1 |
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$0.78 @1k |
| MAX3294 |
2500 |
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$0.79 @1k |
| MAX3295 |
20000 |
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$0.79 @1k |
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See All RS-422/485 Line Driver/Receivers (165)
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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
 Typical Operating Circuit
More Information
Didn't Find What You Need?
Information Index
Document Ref.: 19-2770
Rev 3;
2011-04-08
This page last modified: 2011-04-08
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