Datasheet

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February 2008 Rev 9 1/16

ST232AB

ST232AC

Very high speed, ultra low power consumption

5 V powered 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/µs

■ Receiver propagation delay (typ.): 0.1 µs

■ Receiver input voltage range: ± 30 V

■ Data rate (typ.): 400 kbps/s

■ Operating temperature range:

– -40 to 85 °C

– 0 to 70 °C

Description

The ST232AB/AC 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 ST232AB/AC

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

networks.

TSSOP16

SO-16

Table 1. Device summary

Order codes

Temperature

range

Packages Packaging

ST232ACDR 0 to 70 °C SO-16 (tape and reel) 2500 parts per reel

ST232ABDR -40 to 85 °C SO-16 (tape and reel) 2500 parts per reel

ST232ACTR 0 to 70 °C TSSOP16 (tape and reel) 2500 parts per reel

ST232ABTR -40 to 85 °C TSSOP16 (tape and reel) 2500 parts per reel

www.st.com

Summary of content (16 pages)

PAGE 1
ST232AB ST232AC Very high speed, ultra low power consumption 5 V powered 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/µs ■ Receiver propagation delay (typ.): 0.1 µs ■ Receiver input voltage range: ± 30 V ■ Data rate (typ.
PAGE 2
ST232AB - ST232AC Contents 1 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 Typical performance characteristics . . . .
PAGE 3
ST232AB - ST232AC Pin configuration 1 Pin configuration Figure 1. Pin connections (top view) Table 2.
PAGE 4
Maximum ratings ST232AB - ST232AC 2 Maximum ratings Table 3. Absolute maximum ratings Symbol Parameter Value Unit -0.3 to 6 V VCC Supply voltage V+ Extra positive voltage (VCC - 0.3 to 13.2) V V- Extra negative voltage 0.3 to -13.2 V TIN Transmitter input voltage range -0.3 to (VCC + 0.3) V RIN Receiver input voltage range ± 30 V TOUT Transmitter output voltage range ± 15 V ROUT Receiver output voltage range -0.3 to (VCC + 0.
PAGE 5
ST232AB - ST232AC 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 Typ. Max. Unit 1.5 4 mA Transmitter electrical characteristics (C1 - C4 = 0.1 µF, VCC = 5V ± 10 %, TA = -40 to 85 °C, unless otherwise specified.
PAGE 6
Electrical characteristics Table 6. Symbol ST232AB - ST232AC 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 VRIN Receiver input voltage operating range RRIN RS-232 input resistance VRIL RS-232 input threshold low VRIH RS-232 input threshold high Test condition TA = 25°C VCC = 5V VROL TTL/CMOS output voltage low IOUT = 3.
PAGE 7
ST232AB - ST232AC 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 ST232AB - ST232AC 5 Typical performance characteristics Figure 3. (Unless otherwise specified TJ = 25 °C) Driver voltage transfer Figure 4. characteristics Drive short circuit output current vs temperature Receiver threshold vs supply voltage Driver output capability current vs output voltage Figure 5. 8/16 Figure 6.
PAGE 9
ST232AB - ST232AC Figure 7. Driver short circuit supply current vs temperature Typical performance characteristics Figure 8.
PAGE 10
Package mechanical data 6 ST232AB - ST232AC 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
ST232AB - ST232AC Package mechanical data SO-16 mechanical data Dim. mm. Min. Typ. A a1 inch. Max. Min. Typ. 1.75 0.1 0.068 0.25 a2 Max. 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 12
Package mechanical data ST232AB - ST232AC 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 13
ST232AB - ST232AC 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 14
Package mechanical data ST232AB - ST232AC Tape & reel TSSOP16 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 14/16 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 15
ST232AB - ST232AC Revision history 7 Revision history Table 8. Document revision history Date Revision Changes 27-Oct-2006 7 Order codes updated. 14-Nov-2007 8 Added Table 1. 08-Feb-2008 9 Modified: Table 1 on page 1.
PAGE 16
ST232AB - ST232AC 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.