MAX14569 Datasheet, PDF (1/14 Pages) Maxim Integrated Products – Dual-Pair LLT with Charge Pump and High-ESD Protection

19-5523; Rev 0; 9/10
Dual-Pair LLT with Charge Pump
and High-ESD Protection
General Description
The MAX14569 is a dedicated dual-pair unidirectional
logic-level translator that is ideal for industrial and meter-
ing applications. Voltages VCC and VL set the logic
levels on either side of the device. Logic-high signals
present on the VL side of the device appear as high-
voltage logic signals on the VCC side of the device and
vice versa.
The device has two pairs of logic-level translators in
back-to-back configuration: one logic-level translator
from a low voltage to a high voltage and the other logic-
level translator from a high voltage to a low voltage. The
device also features a high-efficiency charge pump to
boost the battery input, VBAT, to VCC (5V).
The device features an extreme power-saving mode
that reduces supply current to a typical 0.01FA. The
device also features thermal short-circuit protection for
enhanced protection in applications that route signals
externally.
In addition, the device features enhanced high electro-
static discharge (ESD) Human Body Model (HBM) pro-
tection on OUTAVCC, INBVCC, OUTCVCC, and INDVCC
ports up to Q25kV. The MAX14569 is available in a
16-pin QSOP package, and is specified over the -40NC
to +85NC extended temperature range.
Features
S Ultra-Low Shutdown Supply Current, 0.01µA (typ)
S Ultra-Low VL Supply Current, 1µA (max)
S Operates Down to 1.6V on VL
S Continuous Current Drive Capability > 10mA
S Extended ESD Protection on VCC Input and
Output Lines
±25kV Human Body Model
±15kV IEC 61000-4-2 Air-Gap Discharge
±12kV IEC 61000-4-2 Contact Discharge
S 16-Pin QSOP Package
S -40NC to +85NC Extended Operating Temperature
Range
Applications
Automatic Meter Reader
Remote Communications System
Industrial Networking
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX14569EEE+T -40NC to +85NC
16 QSOP
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
Typical Operating Circuit
1.8V TO 3.3V
0.1μF
1μF
0.47μF
LITHIUM
BATTERY
µPROCESSOR
EN
DATA
DATA
EN
DATA
DATA
GND
VL VBAT
ENAB
INAVL
OUTBVL
CP1 CP2
CHARGE ^VCC ^5V
PUMP
OUTAVCC
INBVCC
ENCD
INCVL
OUTDVL
MAX14569
OUTCVCC
INDVCC
GND
2.2μF
METER
TRANSMITTER
UNIT
GND
METER
TRANSMITTER
UNIT
GND
________________________________________________________________ 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.