MAX3293_14 Datasheet, PDF (1/11 Pages) Maxim Integrated Products – 20Mbps, +3.3V, SOT23 RS-485/RS-422 Transmitters

MAX3293–MAX3295
20Mbps, +3.3V, SOT23 RS-485/
RS-422 Transmitters
General Description
The MAX3293/MAX3294/MAX3295 low-power, high-
speed transmitters for RS-485/RS-422 commu-
nication 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 guar-
anteed 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 ther-
mal-shutdown circuitry protect the driver against exces-
sive power dissipation.
The MAX3293/MAX3294/MAX3295 are offered in a
6-pin SOT23 package, and are specified over the
automotive temperature range.
Applications
●● RS-485/RS-422 Communications
●● Clock Distribution
●● Telecom Equipment
●● Automotive
●● Security Equipment
●● Point-of-Sale Equipment
●● Industrial Control
Typical Operating Circuit
DI
Z
D
Y
DE
120Ω
MAX3293
MAX3294
MAX3295
R
RO
MAX3280E
MAX3281E
MAX3283E
MAX3284E
Features
●● Space-Saving 6-Pin SOT23 Package
●● 250kbps/2.5Mbps/20Mbps Data Rates Available
●● Operate from a Single +3.3V Supply
●● ESD Protection
±9kV–Human Body Model
●● 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)
Ordering Information
PART
MAX3293AUT+T
MAX3294AUT+T
MAX3295AUT+T
MAX3295AUT/V+T
TEMP RANGE
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
PIN-PACKAGE
6 SOT23-6
6 SOT23-6
6 SOT23-6
6 SOT23-6
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
/V denotes automotive-qualified package.
Selector Guide
PART
MAXIMUM SLEW-
DATA RATE RATE
(Mbps)
LIMITED
TOP
MARK
MAX3293AUT+T
0.25
MAX3294AUT+T
2.5
MAX3295AUT+T
20
MAX3295AUT/V+T
20
Yes
ABNI or
ABVH
Yes
ABNJ or
ABVI
No
ABNK or
ABVJ
No
+ACSB
Pin Configuration appears at end of data sheet.
19-2770; Rev 4; 12/14