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ST232EB-ST232EC
15KV ESD PROTECTED 5V RS-232 TRANSCEIVER
January 2014 DocID6900 Rev 17 1/18
ST202EB, ST202EC ST232EB, ST232EC 15 kV ESD-protected 5 V RS-232 transceiver
Datasheet - production data
Features ESD protection for RS-232 I/O pins: ± 15 kV human body model Guaranteed 230 kbps date rate Guaranteed slew rate range 3 to 30 V/ms Operate from a single 5 V power supply
DescriptionThe ST202EB, ST202EC, ST232EB, and
ST232EC are two-driver, two-receiver devices
designed for RS-232 and V.28 communications in
harsh environments. Each transmitter output and
receiver input is protected against ± 15 kV
electrostatic discharge (ESD) shocks. The drivers
meet all EIA/TIA-232E and CCITT V.28
specifications at data rates up to 230 kbps, when
loaded in accordance with the EIA/TIA-232E
specification. The ST202EB, ST202EC,
ST232EB, and ST232EC use a single 5 V supply
voltage.
The ST232EB and ST232EC operate with four
1 µF capacitors, while the ST202EB and
ST202EC operate with four 0.1 µF capacitors,
further reducing cost and board space.
Table 1. Device summary
Contents ST202EB, ST202EC, ST232EB, ST232EC2/18 DocID6900 Rev 17
Contents Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106.1 Package thermal characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.2 SO16 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
6.3 SO16L package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.4 TSSOP16 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
DocID6900 Rev 17 3/18
ST202EB, ST202EC, ST232EB, ST232EC Pin configuration
1 Pin configuration
Figure 1. Pin connections (top view)
Table 2. Pin description
Maximum ratings ST202EB, ST202EC, ST232EB, ST232EC
4/18 DocID6900 Rev 17
2 Maximum ratings
Note: Absolute maximum ratings are those values beyond which damage to the device may occur.
Functional operation under these condition is not implied.
Table 3. Absolute maximum ratings
DocID6900 Rev 17 5/18
ST202EB, ST202EC, ST232EB, ST232EC Electrical characteristics
3 Electrical characteristics
Note: All tests versus GND.
Table 4. ESD performance: transmitter outputs, receiver inputs
Table 5. Electrical characteristics
(C1 - C4 = 0.1 µF for ST202E, C1 - C4 = 0.1 µF for ST232E, VCC = 5 V ± 10 %,
TA = -40 to 125 °C, unless otherwise specified; typical values are referred to TA = 25 °C)
Table 6. Transmitter 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) Measured from 3 V to -3 V or from -3 V to 3 V
Electrical characteristics ST202EB, ST202EC, ST232EB, ST232EC
6/18 DocID6900 Rev 17
Table 7. 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)
DocID6900 Rev 17 7/18
ST202EB, ST202EC, ST232EB, ST232EC Typical application
4 Typical application
Figure 2. Application circuit C1-4 capacitors can be 1µF C1-4 can be common or biased capacitors
Table 8. Capacitance value (µF)
Typical performance characteristics ST202EB, ST202EC, ST232EB, ST232EC
8/18 DocID6900 Rev 17 Typical performance characteristics
(Unless otherwise specified TJ = 25 °C)
Figure 3. Supply current vs temperature Figure 4. Data rate vs temperature
Figure 5. Receiver propagation delay Figure 6. Driver propagation delay
DocID6900 Rev 17 9/18
ST202EB, ST202EC, ST232EB, ST232EC Typical performance characteristics
Figure 7. High level output voltage swing vs
temperature
Figure 8. Low level output voltage swing vs
temperature
Figure 9. High level transmitter output short
circuit current vs temperature
Figure 10. Low level transmitter output short
circuit current vs temperature
Figure 11. High level receiver output short
circuit current vs temperature
Figure 12. Low level receiver output short
circuit current vs temperature
