Datasheet

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February 2008 Rev 11 1/18

ST3232B

ST3232C

3 to 5.5 V, low power, up to 400 kbps

RS-232 drivers and receivers

Features

■ 300 µA supply current

■ 300 kbps minimum guaranteed data rate

■ 6 V/µs minimum guaranteed slew rate

■ Meet EIA/TIA-232 specifications down to 3 V

■ Available in SO-16, SO-16 large and TSSOP16

Description

The ST3232 is a 3 V powered EIA/TIA-232 and

V.28/V.24 communication interface with low power

requirements, high data-rate capabilities.

ST3232 has a proprietary low dropout transmitter

output stage providing true RS-232 performance

from 3 to 5.5 V supplies. The device requires only

four small 0.1 mF standard external capacitors for

operations from 3 V supply.

The ST3232 has two receivers and two drivers.

The device is guaranteed to run at data rates of

250 kbps while maintaining RS-232 output levels.

Typical applications are Notebook, Subnotebook

and Palmtop Computers, Battery Powered

Equipment, Hand-Held Equipment, Peripherals

and Printers.

SO-16 Large

TSSOP16

SO-16

Table 1. Device summary

Order codes Temp. range Package Packaging

ST3232CDR 0 to 70 °C SO-16 (tape and reel) 2500 parts per reel

ST3232BDR -40 to 85 °C SO-16 (tape and reel) 2500 parts per reel

ST3232CWR 0 to 70 °C SO-16 Large (tape and reel) 1000 parts per reel

ST3232BWR -40 to 85 °C SO-16 Large (tape and reel) 1000 parts per reel

ST3232CTR 0 to 70 °C TSSOP16 (tape and reel) 2500 parts per reel

ST3232BTR -40 to 85 °C TSSOP16 (tape and reel) 2500 parts per reel

www.st.com

Summary of content (18 pages)

PAGE 1
ST3232B ST3232C 3 to 5.5 V, low power, up to 400 kbps RS-232 drivers and receivers Features ■ 300 µA supply current ■ 300 kbps minimum guaranteed data rate ■ 6 V/µs minimum guaranteed slew rate ■ Meet EIA/TIA-232 specifications down to 3 V ■ Available in SO-16, SO-16 large and TSSOP16 SO-16 SO-16 Large Description The ST3232 is a 3 V powered EIA/TIA-232 and V.28/V.24 communication interface with low power requirements, high data-rate capabilities.
PAGE 2
Contents ST3232B - ST3232C Contents 1 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 Typical performance characteristics .
PAGE 3
ST3232B - ST3232C Pin configuration 1 Pin configuration Figure 1. Pin connection Table 2.
PAGE 4
Absolute maximum ratings ST3232B - ST3232C 2 Absolute maximum ratings Table 3. Absolute maximum ratings Symbol Parameter Value Unit -0.3 to 6 V VCC Supply voltage V+ Doubled voltage terminal (VCC - 0.3) to 7 V V- Inverted voltage terminal 0.3 to -7 V 13 V -0.3 to 6 V ± 25 V ± 13.2 V -0.3 to (VCC + 0.
PAGE 5
ST3232B - ST3232C Electrical characteristics 3 Electrical characteristics Table 4. Electrical characteristics (C1 - C4 = 0.1 µF, VCC = 3 V to 5.5 V, TA = -40 to 85 °C, unless otherwise specified. Typical values are referred to TA = 25 °C) Symbol Parameter ISUPPLY VCC Power supply current Table 5. Symbol Min. Typ. Max. Unit No Load, VCC = 3V ± 10%, TA = 25°C 0.3 1 mA No Load, VCC = 5V ± 10%, TA = 25°C 1 2 mA Logic input (C1 - C4 = 0.1 µF, VCC = 3 V to 5.
PAGE 6
Electrical characteristics ST3232B - ST3232C Timing characteristics (C1 - C4 = 0.1 µF tested at 3.3 V ± 10 %, VCC = 3 V to 5.5 V, TA = -40 to 85 °C, unless otherwise specified. Typical values are referred to TA = 25 °C) Table 8. Symbol Parameter Test conditions Min. Typ. Max. Unit 300 400 kbps Data transfer rate RL = 3kΩ, CL2= 1000pF one transmitter switching tPHLR tPLHR Propagation delay input to output RXIN = RXOUT, CL = 150pF 0.
PAGE 7
ST3232B - ST3232C Application 4 Application Figure 2. Application circuits Table 9. Capacitance value (µF) VCC C1 C2 C3 C4 Cbypass 3.0 to 3.6 0.1 0.1 0.1 0.1 0.1 4.5 to 5.5 0.047 0.33 0.33 0.33 0.
PAGE 8
Typical performance characteristics ST3232B - ST3232C 5 Typical performance characteristics Figure 3. (unless otherwise specified TJ = 25 °C) Driver voltage transfer Figure 4. characteristics for transmitter input Driver voltage transfer characteristics for receiver inputs Output current vs output low voltage Output current vs output low voltage Figure 5. 8/18 Figure 6.
PAGE 9
ST3232B - ST3232C Figure 7. Output current vs output high voltage Figure 9. Receiver input resistance Typical performance characteristics Figure 8.
PAGE 10
Package mechanical data 6 ST3232B - ST3232C 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.
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ST3232B - ST3232C 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 ST3232B - ST3232C 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 13
ST3232B - ST3232C Package mechanical data 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 14
Package mechanical data ST3232B - ST3232C Tape & reel SO-16 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 14/18 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 15
ST3232B - ST3232C Package mechanical data Tape & reel SO-16L 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 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 16
Package mechanical data ST3232B - ST3232C 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 16/18 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 17
ST3232B - ST3232C Revision history 7 Revision history Table 10. Document revision history Date Revision Changes 06-Sep-2006 8 Order codes has been updated and new template. 25-Oct-2006 9 Order codes has been updated. 21-Jan-2008 10 Added note on Table 3. 08-Feb-2008 11 Modified: Table 1 on page 1.
PAGE 18
ST3232B - ST3232C 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.