ST202B ST202C
5 V powered multi-channel RS-232 drivers and receivers
Features
Supply voltage range: 4.5 to 5.5 V Supply current no load (typ.): 1.5 mA Transmitter output voltage swing (Typ): 9 V Transition slew rate (typ.): 12 V/ms Receiver propagation delay (typ.): 0.1 ms Compatible with MAX202 Receiver input voltage range: 30 V Data rate (typ.): 400 kbps/s Operating temperature range: -40 to 85 C, 0 to 70 C
TSSOP SOP SOP Large
Description
The ST202 is a 2 driver, 2 receiver device following EIA/TIA-232 and V.28 communication standard. It is particularly suitable for applications where 12 V is not available. The ST202 uses a single 5 V power supply and only four external capacitors (0.1 F). Typical application are in: portable computers, low power modems, interfaces translation, battery powered RS-232 networks.
Table 1.
Device summary
Temperature range -40 to 85 C 0 to 70 C -40 to 85 C 0 to 70 C 0 to 70 C -40 to 85 C Package SO-16 (tube) SO-16 (tape and reel) SO-16 (tape and reel) SO-16 Large (tape and reel) TSSOP16 (tape and reel) TSSOP16 (tape and reel) Packaging 50 parts per tube / 20 tube per box 2500 parts per reel 2500 parts per reel 1000 parts per reel 2500 parts per reel 2500 parts per reel
Order code ST202BD ST202CDR ST202BDR ST202CWR ST202CTR ST202BTR
February 2008
Rev 8
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ST202B - ST202C
Contents
1 2 3 4 5 6 7 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
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ST202B - ST202C
Pin configuration
1
Figure 1.
Pin configuration
Pin connections (top view)
Table 2.
Pin n 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Pin description
Symbol C1+ V+ C1C2+ C2VT2OUT R2IN R2OUT T2IN T1IN R1OUT R1IN T1OUT GND VCC Note Positive terminal for the first charge pump capacitor Doubled voltage terminal Negative terminal for the first charge pump capacitor Positive terminal for the second charge pump capacitor Negative terminal for the second charge pump capacitor Inver ted voltage terminal Second transmitter output voltage Second receiver input voltage Second receiver output voltage Second transmitter input voltage First transmitter input voltage First receiver output voltage First receiver input voltage First transmitter output voltage Ground Supply voltage
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Maximum ratings
ST202B - ST202C
2
Table 3.
Symbol VCC V+ VTIN RIN TOUT ROUT TSCTOUT
Maximum ratings
Absolute maximum ratings
Parameter Supply voltage Extra positive voltage Extra negative voltage Transmitter input voltage range Receiver input voltage range Transmitter output voltage range Receiver output voltage range Shor t circuit duration on TOUT Value -0.3 to 6 (VCC -0.3) to 13.2 0.3 to -13.2 -0.3 to (VCC + 0.3) 30 15 -0.3 to (VCC + 0.3) infinite Unit V V V V V V V
Note:
Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.
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ST202B - ST202C
Electrical characteristics
3
Table 4.
Electrical characteristics
Electrical characteristics (C1 - C4 = 0.1 F, VCC = 5 V 10 %, TA = -40 to 85 C, unless otherwise specified. Typical values are referred to TA = 25 C).
Parameter VCC power supply current No Load Test condition Min. Typ. 1.5 Max. 4 Unit mA
Symbol ISUPPLY
Table 5.
Transmitter electrical characteristics (C1 - C4 = 0.1 F, VCC = 5 V 10 %, TA = -40 to 85 C, unless otherwise specified. Typical values are referred to TA = 25 C).
Parameter Output voltage swing Logic pull-up current Input logic threshold low Input logic threshold high Transition slew rate Data rate Transmitter output resistance Transmitter output short circuit current Propagation delay time TA = 25C, VCC = 5V RL = 3 to 7k CL = 50 to 2500pF (1) ,
(2)
Symbol VTOUT ITIL VTIL VTIH SRT DR RTOUT ISC tDT
Test condition All transmitter outputs are loaded with 3k to GND TIN = 0V
Min. 5
Typ. 9 5
Max.
Unit V
40
A V
0.8
1.4 1.4 2 30
V V/s kbits/s
6 200 300 7
12 400
VCC = V+ = V- = 0V VOUT = 2V One TXOUT to GND TTL-CMOS IN to RS-232 OUT CL = 150pF (50% to 50%)
22 1.3 3.5
mA s
1. Measured from 3 V to -3 V or from -3 V to 3 V 2. One transmitter output is loaded with RL = 3 k to 7 k, CL = 50 to 1000 pF
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Electrical characteristics
ST202B - ST202C
Table 6.
Receiver electrical characteristics (C1 - C4 = 0.1 F, VCC = 5 V 10 %, TA = -40 to 85 C, unless otherwise specified. Typical values are referred to TA = 25 C).
Parameter Receiver input voltage operating range RS-232 input resistance RS-232 input threshold low RS-232 input threshold high RS-232 input hysteresis TTL/CMOS output voltage low TTL/CMOS output voltage high Receiver output short circuit current Propagation delay time VCC = 5V IOUT = 3.2mA (to VCC) IOUT = 1mA (to GND) to GND to VCC CL = 150pF (1) 3.5 2 10 0.2 TA = 25C Test condition Min. -30 3 0.8 5 1.3 1.8 0.5 0.2 VCC-0.2 10 mA 30 0.1 0.5 s 2.4 1 0.4 Typ. Max. 30 7 Unit V k V V V V V
Symbol VRIN RRIN VRIL VRIH VRIHYS VROL VROH ISCR tDR
1. RS-232 in to TTL-CMOS out (from 50% to 50%)
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ST202B - ST202C
Typical application
4
Figure 2.
Typical application
Application circuit (1) (2)
1. C1-4 capacitors can even be 1F ones 2. C1-4 can be common or biased capacitors
Table 7.
C1 0.1
Capacitance value (F)
C2 0.1 C3 0.1 C4 0.1 C5 0.1 7/17
Typical performance characteristics
ST202B - ST202C
5
Figure 3.
Typical performance characteristics
(Unless otherwise specified TJ = 25 C) Driver voltage transfer Figure 4. characteristics Drive short circuit output current vs temperature
Figure 5.
Receiver threshold vs supply voltage
Figure 6.
Driver output capability current vs output voltage
Figure 7.
Driver short circuit supply current vs. temperature
Figure 8.
Receiver threshold vs temperature
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ST202B - ST202C
Package mechanical data
6
Package mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK packages. These packages have a lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com.
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Package mechanical data
ST202B - ST202C
SO-16 mechanical data
Dim. A a1 a2 b b1 C c1 D E e e3 F G L M S 3.8 4.6 0.5 9.8 5.8 1.27 8.89 4.0 5.3 1.27 0.62 8 (max.) 0.149 0.181 0.019 10 6.2 0.35 0.19 0. 5 45 (typ.) 0.385 0.228 0.050 0.350 0.157 0.208 0.050 0.024 0.393 0.244 0.1 mm. Min. Typ. Max. 1.75 0.25 1.64 0.46 0.25 0.013 0.007 0.019 0.004 Min. inch. Typ. Max. 0.068 0.010 0.063 0.018 0.010
0016020D
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ST202B - ST202C
Package mechanical data
SO-16L mechanical data
Dim. A a1 a2 b b1 C c1 D E e e3 F G L M S 0.5 1.27 0.75 8 (max.) 0.020 0.050 0.029 7.4 10.1 10.0 1.27 8.89 7.6 0.291 10.5 10.65 0.35 0.23 0. 5 45 (typ.) 0.397 0.393 0.050 0.350 0.300 0.413 0.419 0.1 mm. Min. Typ. Max. 2.65 0.2 2.45 0.49 0.32 0.014 0.009 0.020 0.004 Min. inch. Typ. Max. 0.104 0.008 0.096 0.019 0.012
PO 13I
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Package mechanical data
ST202B - ST202C
TSSOP16 mechanical data
mm. Dim. Min. A A1 A2 b c D E E1 e K L 0 0.45 0.60 0.05 0.8 0.19 0 .09 4.9 6.2 4.3 5 6.4 4.4 0.65 BSC 8 0.75 0 0.018 0.024 1 Typ. Max. 1 .2 0.15 1.05 0.30 0.20 5.1 6.6 4.48 0.002 0.031 0.007 0.004 0.193 0.244 0.169 0.197 0.252 0.173 0.0256 BSC 8 0.030 0.004 0.039 Min. Typ. Max. 0.047 0.006 0.041 0.012 0.0079 0.201 0.260 0.176 inch.
A
A2 A1 b e K c L E
D
E1
PIN 1 IDENTIFICATION
1
0080338D
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ST202B - ST202C
Package mechanical data
Tape & reel SO-16 mechanical data
mm. Dim. Min. A C D N T Ao Bo Ko Po P 6.45 10.3 2.1 3.9 7.9 12.8 20.2 60 22.4 6.65 10.5 2.3 4.1 8.1 0.254 0.406 0.082 0.153 0.311 Typ. Max. 330 13.2 0.504 0.795 2 .362 0.882 0.262 0.414 0.090 0.161 0.319 Min. Typ. Max. 12.992 0.519 inch.
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Package mechanical data
ST202B - ST202C
Tape & reel SO-16L mechanical data
mm. Dim. Min. A C D N T Ao Bo Ko Po P 10.8 10.7 2.9 3.9 11.9 12.8 20.2 60 22.4 11.0 10.9 3 .1 4.1 12.1 0.425 0.421 0.114 0.153 0.468 Typ. Max. 330 13.2 0.504 0.795 2 .362 0.882 0.433 0.429 0.122 0.161 0.476 Min. Typ. Max. 12.992 0.519 inch.
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ST202B - ST202C
Package mechanical data
Tape & reel TSSOP16 mechanical data
mm. Dim. Min. A C D N T Ao Bo Ko Po P 6.7 5.3 1.6 3.9 7.9 12.8 20.2 60 22.4 6.9 5.5 1.8 4.1 8.1 0.264 0.209 0.063 0.153 0.311 Typ. Max. 330 13.2 0.504 0.795 2 .362 0.882 0.272 0.217 0.071 0.161 0.319 Min. Typ. Max. 12.992 0.519 inch.
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Revision history
ST202B - ST202C
7
Table 8.
Date
Revision history
Document revision history
Revision 5 6 7 8 Changes Order codes updated and the document has been reformatted. Device summary updated. Modified: Table 1. Modified: Table 1 on page 1.
09-Mar-2006 16-Jul-2007 14-Nov-2007 11-Feb-2008
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ST202B - ST202C
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