MAX14842 Datasheet, PDF (1/13 Pages) Maxim Integrated Products – 6-Channel, Digital Ground-Level Translator

19-5714; Rev 1; 3/11
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6-Channel, Digital Ground-Level Translator
General Description
The MAX14842 translates digital signals between two
domains that have different ground references of up to
72V. The device features six communication channels,
two bidirectional and four unidirectional. Two of the four
unidirectional channels go in each direction. The device
is powered by two supply voltages that independently
define the logic levels of each ground domain.
The MAX14842 supports guaranteed data rates up to
30Mbps on the four unidirectional channels and up to
2Mbps on the two bidirectional channels. The bidirec-
tional channels have open-drain outputs, making them
suitable for I²C signals. I²C clock stretching and hot
swapping is supported on the bidirectional channels.
Undervoltage lockout ensures that the output pins have
a defined behavior during power-up, power-down, and
during supply transients. For proper operation, ensure
that 0V ≤ (VGNDB - VGNDA) ≤ 72V. Note that GNDB must
be greater than or equal to GNDA.
The MAX14842 is available in a 16-pin TQFN package
and is specified over the -40NC to +125NC automotive
temperature range.
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX14842ATE+
-40NC to +125NC
16 TQFN-EP**
**EP = Exposed pad.
+Denotes a lead(Pb)-free/RoHS-compliant package.
Features
S Supports Ground Differences Up to 72V
S Four Unidirectional Channels: Two In/Two Out
S Two Bidirectional Channels
S I²C Compatible
S Supports I²C Clock Stretching
S 30Mbps Unidirectional Data Rates
S 2Mbps Bidirectional Data Rates
S +3.3V to +5V Level Translation
S Undervoltage Lockout
S 4mm x 4mm, 16-Pin TQFN Package
S -40NC to +125NC Automotive Temperature Range
Applications
Telecommunication Systems
Battery Management
I²C, SMBusK, SPIK, and MICROWIREK Signals
Medical Systems
Power-Over-Ethernet
SMBus is a trademark of Intel Corp.
SPI is a trademark of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
Typical Operating Circuit
3.3V
0.1µF
GPIO
CS
RST
IRQ
RPUA
µC
VDDA
SDA
RPUA
VDDA
SCL
FOR PROPER OPERATION: 0V ≤ (VGNDB - VGNDA) ≤ 72V
VDDA
INA1
INA2
OUTA1
OUTA2
VDDB
OUTB1
OUTB2
INB1
INB2
I/OA1 ^MAX14842 I/OB1
I/OA2
GNDA
I/OB2
GNDB
VGG
0.1µF
5V
WAKE
ADDR
UV
ALARM
RPUB
VDDB
PERIPHERAL
SDA
RPUB
VDDB
SCL
________________________________________________________________ Maxim Integrated Products  1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.