UM202E Datasheet PDF - Union Microsystems

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UM202E
Union Microsystems

Part Number UM202E
Description (UM202E / UM232E) Single Supply RS-232 Transceivers
Page 6 Pages


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Union Microsystems, Inc.
UM202E/232E
High ESD-Protected,Fail-Safe, Single Supply RS-
232 Transceivers
General Description
The UM202E/232E series are low power single supply RS232 interface. The device consists of two line
drivers, two line receivers, and a dual charge pump circuit. The device meets the requirements of TIA/
EIA-232 standard and provides the electrical interface between an asynchronous communication controller
and the serial-port connector.
The on chip charge pump and four small external capacitors act as onboard DC to DC converter, allow
chip operated from single 5V supply, eliminating the need for +/- 10V power supplies, reduce cost and
board space. Chip power supply current is specified at 6.0 mA maximum, making the device ideal for
battery and power conscious applications.
The device operates at data signaling rates over 120 Kb/s. The slew rate of driver is set internally less than
30V/µs and the receivers feature internal noise filtering, eliminating the need for external slew rate and
filter capacitors for reliable operation. The driver inputs and receiver outputs are TTL and CMOS
compatible.
UM202E/232E comes in 16 pin DIP, SOP and SSOP packages, operating over the commercial and industrial
temperature ranges.
The ESD tolerance has been upgraded on these devices to over +/- 15KV for both Human Body Model
and IEC1000-4-2 Air Discharge Method, without latchup. These devices are pin-to-pin compatible with
MAX202/232 devices as well as other popular industry standards.
Applications
Notebook, Subnotebook
Palmtop Computers
Battery-Powered Equipment
Hand-Held Equipment
POS terminal
Network Communication Equipment
Features
ESD Protection for RS-232 Bus Pins up to +/- 15kV Human Body Model
Meets or Exceeds the Requirements of TIA/EIA-232-F and ITU V.28 Standards
Single +5V power supply
Low power, ICC 6.0 mA maximum
Operates up to 120 Kbit/s
BiCMOS Technology
Receiver Noise Filter
Latch-Up Performance Exceeds 200 mA
Pin compatible with industry standard MAX232, ICL232
UM202/232 Datasheet Rev. 0.1 , July 2005
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Ordering Information
PART
UM202ECSE
UM202ECPE
UM202EESE
UM202EEPE
UM232ECSE
UM232ECPE
UM232EESE
UM232EEPE
UM202EE/D
UM232EE/D
TEMP. RANGE
0 oC to +70 oC
0 oC to +70 oC
-40 oC to +85 oC
-40 oC to +85 oC
0 oC to +70 oC
0 oC to +70 oC
-40 oC to +85 oC
-40 oC to +85 oC
-40 oC to +85 oC
-40 oC to +85 oC
PIN PACKAGE
16 SO
16 Plastic DIP
16 SO
16 Plastic DIP
16 SO
16 Plastic DIP
16 SO
16 Plastic DIP
Die Form
Die Form
Absolute Maximum Ratings
VCC...........................................................................-0.3V to +6V
V+..............................................................(VCC - 0.3V) to +14V
V- ..........................................................................-14V to +0.3V
Input Voltages
T_IN ...................................................-0.3V to (V+ + 0.3V)
R_IN .........................................................................+/-30V
Output Voltages
T_OUT.........................................(V- - 0.3V) to (V+ + 0.3V)
R_OUT.............................................-0.3V to (VCC + 0.3V)
Short-Circuit Duration, T_OUT.......................Continuous
Continuous Power Dissipation (TA = +70oC)
16-Pin Plastic DIP (derate 10.53mW/oC above +70oC)...842mW
16-Pin Narrow SO (derate 8.70mW/oC above +70oC).....696mW
Operating Temperature Ranges
UM202EC__ ..............................................0oC to +70oC
UM202EE__.............................................-40oCto +85oC
Storage Temperature Range.......................-65oC to +165oC
Lead Temperature (soldering, 10sec) .......................+300oC
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.
Pin Description
Pin
DIP/SO/SSOP
1,3
2
4,5
6
7,14
8,13
9,12
10,11
15
16
Name
Function
C1+, C1-
V+
C2+, C2-
V-
T_OUT
R_IN
R_OUT
T_IN
GND
VCC
Terminals for positive charge-pump capacitor
+2VCC voltage generated by the charge pump
Terminals for negative charge-pump capacitor
-2VCC voltage generated by the charge pump
RS-232 Driver Outputs
RS-232 Receiver Outputs
RS-232 Receiver Outputs
RS-232 Driver Inputs
Ground
+4.5V to +5.5V Supply-Voltage Input
UM202/232 Datasheet Rev. 0.1 , July 2005
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ELECTRICAL CHARACTERISTICS
(VCC = +5V ±10% for UM202/232; C1–C4 = 0.1µF for UM202/232; C1
TMAX; unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
DC CHARACTERISTICS
C4 = 0.1µF; TA = TMIN to
MIN TYP MAX
VCC Supply Current
ICC No load, TA = +25°C UM202
LOGIC
38
Input Leakage Current
T_IN = 0V to VCC
10
Input Threshold Low
Input Threshold High
VIL T_IN
VIH T_IN
0.8
2.0
Output Voltage Low
VOL R_OUT; IOUT = 3.2mA
0.4
Output Voltage High
VOH
EIA/TIA-232E RECEIVER INPUTS
R_OUT; IOUT = -1.0mA
3.5 VCC-0.4
Input Voltage Range
-30 30
Input Threshold Low
TA = +25°C, VCC = 5V Normal operation 0.8
Input Threshold High
TA = +25°C, VCC = 5V Normal operation
Input Hysteresis
VCC = 5V
0.1
Input Resistance
TA = +25°C, VCC = 5V
3
EIA/TIA-232E TRANSMITTER OUTPUTS
Output Voltage Swing
All drivers loaded with 3kto ground
(Note 1)
5
Output Resistance
VCC = V+ = V- = 0V, VOUT = ±2V
300
Output Short-Circuit Current
TIMING CHARACTERISTICS
Maximum Data Rate
RL = 3kto 7k, CL = 50pF to
1000pF, one transmitter switching
120
1.0
2.0 2.4
0.2
57
9
10 60
Receiver Propagation Delay tPLHR, tPHLR
CL = 150pF
All parts, normal
operation
Transmitter Propagation Delay tPLHT, tPHLT
RL = 3k, CL
transmitters loaded
=
2500pF,
all
TA = +25°C, VCC = 5V, RL = 3kto
Transition-Region Slew Rate
7k, CL = 50pF to 1000pF, measured
from -3V to +3V or +3V to -3V, Figure 1
ESD PERFORMANCE: TRANSMITTER OUTPUTS, RECEIVER INPUTS
Human Body Model
ESD-Protection Voltage
IEC1000-4-2, Contact Discharge
IEC1000-4-2, Air-Gap Discharge
3
0.5 1
1
6 30
15
8
15
UNITS
mA
µA
V
V
V
V
V
V
V
V
k
V
mA
kbps
µs
µs
V/µs
kV
Pin Assignment
UM202/232 Datasheet Rev. 0.1 , July 2005
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Typical Operating Characteristics
(Typical Operating Circuits, VCC = +5V, TA = +25oC, unless otherwise noted.)
Test Circuits
Figure 1. Transition Slew-Rate Circuit
UM202/232 Datasheet Rev. 0.1 , July 2005
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