ST232
5V POWERED MULTI-CHANNEL RS-232DRIVERS AND RECEIVERS
®
March 1999s SUPPLY VOLTAGERANGE:4.5TO 5.5V s SUPPLY CURRENT NO LOAD (TYP):5mA s
TRANSMITTER OUTPUT VOLTAGESWING (TYP):±7.8V
s CONTROLLED OUTPUT SLEW RATE
s RECEIVER INPUT VOLTAGERANGE: ±30V s DATA RATE (TYP):220Kbps
s
OPERATING TEMPERATURE RANGE:-40TO 85o C,0TO 70o C
s
COMPATIBLEWITH MAX232AND MAX202
DESCRIPTION
The ST232is a 2driver,2receiver device following EIA/TIA-232and V.28communication standard.It is particularly suitable for applications where ±12V is not available.The ST232uses a single 5V power supply and only four external capacitors (0.1µF).Typical applications are in:Portable Computers,Low Power Modems,Interfaces Translation,Battery Powered RS-232System,Multi-Drop RS-232Networks.
D
(Micro Package)
N
(Plastic Package)W
(Micro Package Large)T
(TSSOP Package)
212型参比电极
ORDER CODES
Type Temperature
Range Package Comments
ST232CN 0to 70o C DIP-1625parts per tube /40tube per box ST232BN -40to 85o
C DIP-1625parts per tube /40tube per box ST232C
D 0to 70o C SO-16(Tube)50parts per tube /20tube per box ST232BD -40to 85o C SO-16(Tube)50parts per tube /20tube per box
ST232CDR 0to 70o C SO-16(Tape &Reel)2500parts per reel ST232BDR -40to 85o C SO-16(Tape &Reel)2500parts per reel
ST232CW 0to 70o C SO-16Large (Tube)50parts per tube /20tube per box ST232BW -40to 85o C SO-16Large (Tube)50parts per tube /20tube per box
ST232CWR 0to 70o C SO-16Large (Tape &Reel)1000parts per reel ST232BWR -40to 85o C SO-16Large (Tape &Reel)
1000parts per reel ST232CT 0to 70o C TSSOP16(Tube)only for samples ST232BT -40to 85o C TSSOP16(Tube)only for samples ST232CTR 0to 70o C TSSOP16(Tape &Reel)2500parts per reel ST232BTR
-40to 85o C
TSSOP16(Tape &Reel)
2500parts per reel
1/11
ST232
PIN CONFIGURATION
PIN DESCRIPTION
PIN No SYMBOL NAME AND FUNCTION
1C1+Positive Terminal for the first Charge Pump Capacitor
2V+Doubled Voltage Terminal
3C1-Negative Terminal for the first Charge Pump Capacitor
4C2+Positive Terminal for the second Charge Pump Capacitor
5C2-Negative Terminal for the second Charge Pump Capacitor
6V-Inverted Voltage Terminal防身戒指 7T2OUT Second Transmitter Output Voltage
8R2IN Second Receiver Input Voltage
9R2OUT Second Receiver Output Voltage
10T2IN Second Transmitter Input Voltage
11T1IN First Transmitter Input Voltage
12R1OUT First Receiver Output Voltage
13R1IN First Receiver Input Voltage
14T1OUT First Transmitter Output Voltage
15GND Ground
16V CC Supply Voltage
ABSOLUTE MAXIMUM RATINGS(Note1)
Symbol Parameter Value Unit V CC Supply Voltage-0.3to6V T IN Transmitter Input Voltage Range-0.3to(V CC+0.3)V R IN Receiver Input Voltage Range±30V T OUT Transmitter Output Voltage Range(V++0.3)to(V--0.3)V R OUT Receiver Output Voltage Range-0.3to(V CC+0.3)V T SCTOUT Short Circuit Duration on T OUT infinite
T stg Storage Temperature Range-65to+150o C Absolute Maximum Ratingsarethose values beyond which dam age to the device may occur.Functional operation un der these condition is not implied. Note1:No external supply can be applied toV+terminal and V-terminal.
2/11
TRANSMITTER ELECTRICAL CHARACTERISTICS
(C 1-C 4=0.1µF,V CC =5V ±10%,T A =-40to 85o C,unless otherwise specified.Typical Valus are referred to T A =25o C)
Symbol Parameter
Test Conditions
Value Unit
Min.
Typ.Max.
V TOUT Output Voltage Swing All Transmitter outputs are loaded with 3K Ωto GND ±5
±7.8V I TIL Logic Pull-Up Current T IN =0V
15
200µA V TIL Input Logic Threshold Low 0.8
V V TIH Input Logic Threshold High 2V SR T
Transition Slew Rate
T A =25o C,V CC =5V,R L =3to 7K Ω,
C L =50to 2500pF (Note 1)7
30
V/µs D R Data Rate
(Note 2)
120220Kbits/s R TOUT Transmitter Output Resistance V CC =V+=V-=0V V OUT =±2V 300
ΩI SC
Transmitter Output Short Circuit Current
one T XOUT to GND
±10
±60
mA
Note 1:Mea sured from 3V to -3Vor from -3V to 3V.
Note 2:One trasmitter output is loaded with R L =3K Ωto7K Ω,C L =50to 1000pF
ELECTRICAL CHARACTERISTICS
(C 1-C 4=0.1µF,V CC =5V ±10%T A =-40to 85o C,unless otherwise specified.Typical Valus are referred to T A =25o C)
Symbol亲贝
Parameter
Test Conditions
Value Unit Min.
Typ.Max.I SUPPLY V CC Power Supply Current
No Load,
T A =25o
C
5
portal
认证服务器
10
mA
RECEIVER ELECTRICAL CHARACTERISTICS
(C 1-C 4=0.1µF,V CC =5V ±10%,T A =-40to 85o C,unless otherwise specified.Typical Valus are referred to T A =25o C)
Symbol Parameter
Test Conditions
Value Unit
Min.Typ.
Max.V RIN Receiver Input Voltage Operating Range
-3030V R RIN RS-232Input Resistance
T A =25o C,V CC =5V,V RIN =5V
357
K ΩV RIL RS-232Input Logic Threshold Low T A =25o C,V CC =5V 0.8
1.2V V RIH RS-232Input Logic Threshold High T A =25o C,V CC =5V 1.7
2.4V V RIHYS RS-232Input Hysteresis V CC =5V
0.2
0.5
1V V ROL TTL/CMOS Output Voltage Low I OUT =3.2mA (to V CC )0.4
V V ROH TTL/CMOS Output Voltage High I OUT =1mA (to GND) 3.5
V CC -0.4V t dR Propagation Delay Time
C L =150pF (Note 1)
0.31
µs I SCR
Receiver Output Short Circuit Current
±10
mA Note 1:RS-232IN to TTL-CMOSOUT(from 50%to 50%)
ST232
3/11
APPLICATION CIRCUITS (note 1,note 2)
C4
+
C1
+C1+
C1-
3C2
C2-451110129TTL /CMOS OUTPUTS
TTL /CMOS INPUTS V-6C5+
+
C3+5V INPUT 1
16Vcc V+
2+10V
-10V RS 232OUTPUTS
RS 232INPUTS
14
7
13815
GND 5K
5K
+5V TO +10V VOLTAGE DOUBLER +10V TO -10V VOLTAGE INVERTER +5V
400K
T1OUT T1IN
+5V 400K
T2IN
T2OUT T1
T2
R2IN R1IN R2OUT
R1OUT
R1
R2
Capacitance Value (µF)
C1C2C3C4C50.1
压铸机料筒的
设计0.1
0.1
0.1
0.1
Note 1:C 1-4capacitors can even be 1µFones.Note 2:C 1-4canbe common or biase d capacitors.
ST232
4/11
Supply Current vs Temperature
Receiver Propagation Delay
High Level Output Voltage Swing vs Temperature Data Rate vs Temperature
Driver Propagation Delay
Low Level Output Voltage Swing vs Temperature
ST232
5/11
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