Datasheet

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February 2008 Rev 14 1/19

ST232B

ST232C

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.): 5 mA

■ Transmitter output voltage swing (typ): ±7.8 V

■ Controlled output slew rate

■ Receiver input voltage range: ± 30 V

■ Data rate (typ.): 220 kbps

■ Operating temperature range:

– -40 ° to 85 °C

– 0 ° to 70 °C

■ Compatible with MAX232 and MAX202

Description

The ST232 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 ST232 uses a

single 5 V power supply and only four external

capacitors (0.1 µF). Typical applications are in:

portable computers, low power modems,

interfaces translation, battery powered RS-232

system, multi-drop RS-232 networks.

SOP Large

DIP

TSSOP

SOP

Table 1. Device summary

Order code

Temperature

range

Package Packaging

ST232CN 0 to 70 °C DIP-16 25 parts per tube / 40 tube per box

ST232CDR 0 to 70 °C SO-16 (tape and reel) 2500 parts per reel

ST232BDR -40 to 85 °C SO-16 (tape and reel) 2500 parts per reel

ST232CWR 0 to 70 °C SO-16 Large (tape and reel) 1000 parts per reel

ST232BWR -40 to 85 °C SO-16 Large (tape and reel) 1000 parts per reel

ST232CTR 0 to 70 °C TSSOP16 (tape and reel) 2500 parts per reel

ST232BTR -40 to 85 °C TSSOP16 (tape and reel) 2500 parts per reel

www.st.com

Summary of content (19 pages)

PAGE 1
ST232B ST232C 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.): 5 mA ■ Transmitter output voltage swing (typ): ±7.8 V ■ Controlled output slew rate ■ Receiver input voltage range: ± 30 V ■ Data rate (typ.
PAGE 2
ST232B - ST232C Contents 1 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 Typical performance characteristics . . . . .
PAGE 3
ST232B - ST232C Pin configuration 1 Pin configuration Figure 1. Pin connections (top view) Table 2.
PAGE 4
Maximum ratings ST232B - ST232C 2 Maximum ratings Table 3. Absolute maximum ratings Symbol Parameter VCC Supply voltage TIN Transmitter input voltage range RIN Receiver input voltage range Value Unit -0.3 to 6 V -0.3 to (VCC + 0.3) V ± 30 V (V+ + 0.3) to (V- - 0.3) V V TOUT Transmitter output voltage range ROUT Receiver output voltage range -0.3 to (VCC + 0.
PAGE 5
ST232B - ST232C Electrical characteristics 3 Electrical characteristics Table 4. Electrical characteristics (C1 - C4 = 0.1 µF, VCC = 5 V ± 10 %, TA = -40 to 85 °C, unless otherwise specified. Typical values are referred to TA = 25 °C). Symbol ISUPPLY Table 5. Parameter Test condition VCC Power supply current Min. No Load, TA = 25°C Parameter Test condition Unit 5 10 mA All transmitter outputs are loaded with 3kΩ to GND Min. Typ. ±5 ± 7.
PAGE 6
Electrical characteristics Table 6. Symbol ST232B - ST232C Receiver electrical characteristics (C1 - C4 = 0.1 µF, VCC = 5 V ± 10 %, TA = -40 to 85 °C, unless otherwise specified. Typical values are referred to TA = 25 °C). Parameter Test condition Min. Typ. VRIN Receiver input voltage operating range RRIN RS-232 input resistance TA = 25°C, VCC = 5 V, VRIN = 5V 3 5 VRIL RS-232 input threshold low TA = 25°C, VCC = 5 V 0.8 1.
PAGE 7
ST232B - ST232C Typical application 4 Typical application Figure 2. Application circuit (1) (2) 1. C1-4 capacitors can even be 1µF ones 2. C1-4 can be common or biased capacitors Table 7. Capacitance value (µF) C1 C2 C3 C4 C5 0.1 0.1 0.1 0.1 0.
PAGE 8
Typical performance characteristics ST232B - ST232C 5 Typical performance characteristics Figure 3. (Unless otherwise specified TJ = 25 °C) Supply current vs temperature Figure 4. Data rate vs temperature Figure 5. Receiver propagation delay Figure 6. Driver propagation delay Figure 7. High level output voltage swing vs temperature Figure 8.
PAGE 9
ST232B - ST232C Figure 9. High level transmitter output short circuit current vs temperature Figure 11. High level receiver output short circuit current vs temperature Typical performance characteristics Figure 10. Low level transmitter output short circuit current vs temperature Figure 12.
PAGE 10
Package mechanical data 6 ST232B - ST232C 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.
PAGE 11
ST232B - ST232C Package mechanical data Plastic DIP-16 (0.25) mechanical data mm. inch. Dim. Min. a1 0.51 B 0.77 Typ. Max. Min. Typ. Max. 0.020 1.65 0.030 0.065 b 0.5 0.020 b1 0.25 0.010 D 20 0.787 E 8.5 0.335 e 2.54 0.100 e3 17.78 0.700 F 7.1 0.280 I 5.1 0.201 L Z 3.3 0.130 1.27 0.
PAGE 12
Package mechanical data ST232B - ST232C SO-16 mechanical data Dim. mm. Min. Typ. A a1 inch. Max. Min. Typ. 1.75 0.1 0.25 a2 Max. 0.068 0.004 0.010 1.64 0.063 b 0.35 0.46 0.013 0.018 b1 0.19 0.25 0.007 0.010 C 0.5 0.019 c1 45° (typ.) D 9.8 10 0.385 0.393 E 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 8.89 0.350 F 3.8 4.0 0.149 0.157 G 4.6 5.3 0.181 0.208 L 0.5 1.27 0.019 0.050 M S 0.62 0.024 8° (max.
PAGE 13
ST232B - ST232C Package mechanical data SO-16L mechanical data Dim. mm. Min. Typ. A a1 inch. Max. Min. Typ. 2.65 0.1 0.104 0.2 a2 Max. 0.004 0.008 2.45 0.096 b 0.35 0.49 0.014 0.019 b1 0.23 0.32 0.009 0.012 C 0.5 0.020 c1 45° (typ.) D 10.1 10.5 0.397 0.413 E 10.0 10.65 0.393 0.419 e 1.27 0.050 e3 8.89 0.350 F 7.4 7.6 0.291 0.300 0.5 1.27 0.020 0.050 G L M S 0.75 0.029 8° (max.
PAGE 14
Package mechanical data ST232B - ST232C TSSOP16 mechanical data mm. inch. Dim. Min. Typ. A Max. Min. Typ. Max. 1.2 A1 0.05 A2 0.8 b 0.047 0.15 0.002 0.004 0.006 1.05 0.031 0.039 0.041 0.19 0.30 0.007 0.012 c 0.09 0.20 0.004 0.0079 D 4.9 5 5.1 0.193 0.197 0.201 E 6.2 6.4 6.6 0.244 0.252 0.260 E1 4.3 4.4 4.48 0.169 0.173 0.176 1 e 0.65 BSC K 0° L 0.45 A 0.60 0.0256 BSC 8° 0° 0.75 0.018 8° 0.024 0.
PAGE 15
ST232B - ST232C Package mechanical data Tape & reel SO-16 mechanical data mm. inch. Dim. Min. A Typ. Max. Min. 330 Max. 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 Typ. 0.504 22.4 0.519 0.882 Ao 6.45 6.65 0.254 0.262 Bo 10.3 10.5 0.406 0.414 Ko 2.1 2.3 0.082 0.090 Po 3.9 4.1 0.153 0.161 P 7.9 8.1 0.311 0.
PAGE 16
Package mechanical data ST232B - ST232C Tape & reel SO-16L mechanical data mm. inch. Dim. Min. A Max. Min. 330 13.2 Typ. Max. 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 16/19 Typ. 0.504 22.4 0.519 0.882 Ao 10.8 11.0 0.425 0.433 Bo 10.7 10.9 0.421 0.429 Ko 2.9 3.1 0.114 0.122 Po 3.9 4.1 0.153 0.161 P 11.9 12.1 0.468 0.
PAGE 17
ST232B - ST232C Package mechanical data Tape & reel TSSOP16 mechanical data mm. inch. Dim. Min. A Typ. Max. Min. 330 Max. 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 Typ. 0.504 22.4 0.519 0.882 Ao 6.7 6.9 0.264 0.272 Bo 5.3 5.5 0.209 0.217 Ko 1.6 1.8 0.063 0.071 Po 3.9 4.1 0.153 0.161 P 7.9 8.1 0.311 0.
PAGE 18
Revision history ST232B - ST232C 7 Revision history Table 8. Document revision history Date Revision 02-Sep-2005 11 Mistake ITIL max. on table 5. 27-Oct-2006 12 Order codes updated. 14-Nov-2007 13 Added Table 1. 08-Feb-2008 14 Modified: Table 1 on page 1.
PAGE 19
ST232B - ST232C Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale.