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UM232E の電気的特性と機能

UM232EのメーカーはUnion Microsystemsです、この部品の機能は「(UM202E / UM232E) Single Supply RS-232 Transceivers」です。


製品の詳細 ( Datasheet PDF )

部品番号 UM232E
部品説明 (UM202E / UM232E) Single Supply RS-232 Transceivers
メーカ Union Microsystems
ロゴ Union Microsystems ロゴ 




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UM232E Datasheet, UM232E PDF,ピン配置, 機能
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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
Page 1 of 6
Datasheet pdf - http://www.DataSheet4U.net/

1 Page





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Union Microsystems, Inc.
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
Page 3 of 6
Datasheet pdf - http://www.DataSheet4U.net/


3Pages


UM232E 電子部品, 半導体
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Union Microsystems, Inc.
ESD Protection
UM202/232 devices have standard ESD protection structures incorporated on the pins to protect against
electrostatic discharges encountered during assembly and handling. In addition, the RS232 bus pins (driver
outputs and receiver inputs) of these devices have an extra level of ESD protection. Advanced ESD
structures were designed to successfully protect these bus pins against ESD discharge of 15 kV when
powered down.
UM202/232 Datasheet Rev. 0.1 , July 2005
Page 6 of 6
Datasheet pdf - http://www.DataSheet4U.net/

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