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MAX3325 Datasheet(PDF) 2 Page - Maxim Integrated Products

Part No. MAX3325
Description  3V Dual RS-232 Transceiver with LCD Supply and Contrast Controller
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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 2 page
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3V Dual RS-232 Transceiver with
LCD Supply and Contrast Controller
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VDD = +3.0V to +3.6V, VL = +3.3V, circuit and components of Figure 1, TA = TMIN to TMAX, unless otherwise noted. Typical values
are at VDD = +3.3V, TA = +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
VDD, VL to GND ........................................................-0.3V to +6V
LCD, REF-, TEMP to GND .............................-6V to (VDD + 0.3V)
V+ to GND (Note 1) ..................................................-0.3V to +7V
V- to GND (Note 1) ...................................................+0.3V to -7V
V+ to |V-| (Note 1) ................................................................+13V
REF+, FB, R_OUT to GND ............................-0.3V to (VL + 0.3V)
Input Voltages
T_OUT,
SDLCD, SD232, UP, DOWN to GND.......-0.3V to +6V
R_IN to GND ....................................................................±25V
Output Voltages
T_OUT to GND.................................................................±13V
R_OUT to GND..........................................-0.3V to (VL + 0.3V)
REG to GND .........................................................-0.3V to +6V
Short-Circuit Duration (T_OUT, REF+, REF-) .............Continuous
Continuous Output Current
REG.................................................................................75mA
LCD .................................................................................40mA
Continuous Power Dissipation
28-Pin SSOP (derate 9.52mW/°C above +70°C) .........762mW
28-Pin NDIP (derate 14.3mW/°C above +70°C) ........1143mW
Operating Temperature Range
MAX3325C_I .......................................................0°C to +70°C
MAX3325E_I ....................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
Note 1: V+ and V- can have maximum magnitudes of +7V, but their absolute difference cannot exceed 13V.
VFB = 0, CMOS input
3V < VDD < 3.6V
1 transmitter loaded with
5k
Ω, TA = +25°C
ITEMP < 22µA
TA = +25°C
Guaranteed monotonic
No load
No load, VDD = VL = 3.3V, TA = +25°C
No load, VDD = VL = 3.3V, TA = +25°C
CONDITIONS
nA
-10
0
10
Input Leakage Current (Note 2)
mV
-20
0
20
Feedback Regulation Point
mA
50
Short-Circuit Current
mV
650
Line Regulation
4.7
5
5.3
mV/°C
-18
TEMP Voltage Temperature
Coefficient
V
-3.2
TEMP Output
k
35
50
65
Output Impedance
mV
-15
0
10
Zero-Scale Voltage
V
1.13
1.2
1.27
Full-Scale Voltage
Bits
6
µA
0.5
10
VL Supply Current
mA
24
VDD Supply Current
UNITS
MIN
TYP
MAX
PARAMETER
SD232, SDLCD = GND; all input pins = GND or VDD;
VDD = VL = 3.3V; TA = +25°C
µA
0.5
10
VDD Shutdown Supply Current
VLCD = -4.0V, load = 0 to -3mA
mV
20
LCD Load Regulation (Note 3)
V
5
REG Output Voltage
0 < VDAC < VREF+, IDAC ≤ 10µA
No load
VCC ≥ 3.15V, IREG = 0 to
11mA
VCC ≥ 3.0V, IREG = 0 to
7mA
DC CHARACTERISTICS
DIGITAL-TO-ANALOG CONVERTER
TEMPERATURE SENSOR
POSITIVE LINEAR REGULATOR
NEGATIVE LINEAR REGULATOR—LCD BIAS
Resolution




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