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ST3241EB Dataheets PDF



Part Number ST3241EB
Manufacturers STMicroelectronics
Logo STMicroelectronics
Description (ST3241EB/C) transceiver
Datasheet ST3241EB DatasheetST3241EB Datasheet (PDF)

ST3241EB ST3241EC ±15 kV ESD protected 3 to 5.5 V, 400 kbps, RS-232 transceiver with auto-power-down Features ■ ESD protection for RS-232 I/O pins: ±8 kV IEC 1000-4-2 contact discharge ±15 kV human body model 1 µA supply current achieved when in autopower-down 250 kbps minimum guaranteed data rate Guaranteed 6 V/ms slew rate range Guaranteed mouse drive ability 0.1 µF external capacitors Meets EIA/TIA-232 specifications down to 3 V Available in SSOP-28 package It is a complete serial port (3 dr.

  ST3241EB   ST3241EB


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ST3241EB ST3241EC ±15 kV ESD protected 3 to 5.5 V, 400 kbps, RS-232 transceiver with auto-power-down Features ■ ESD protection for RS-232 I/O pins: ±8 kV IEC 1000-4-2 contact discharge ±15 kV human body model 1 µA supply current achieved when in autopower-down 250 kbps minimum guaranteed data rate Guaranteed 6 V/ms slew rate range Guaranteed mouse drive ability 0.1 µF external capacitors Meets EIA/TIA-232 specifications down to 3 V Available in SSOP-28 package It is a complete serial port (3 drivers, 5 receivers) intended for notebook or sub-notebook computers. Receivers R1 and R2 have extra outputs in addition to their standard outputs. These extra outputs are always active. www.DataSheet.net/ ■ ■ ■ ■ ■ ■ ■ SSOP-28 Description The ST3241E device consists of 3 drivers, 5 receivers and a dual charge-pump circuit. The device meets the requirements of EIA/TIA and V.28/V.24 communication standards providing high data rate capability and enhanced electrostatic discharge (ESD) protection. All transmitter outputs and receiver inputs are protected to ±8 kV using IEC 1000-4-2 contact discharge and ±15 kV using the human body model. The receiver R2 is always active to implement a wake-up feature for serial port. The ST3241E has a proprietary low-dropout transmitter output stage enabling true RS-232 performance from a 3.0 V to 5.5 V supply with a dual charge pump. The device is guaranteed to run at data rates of 250 kbps while maintaining RS-232 output levels. Table 1. Device summary Temperature range 0 to 70°C –40 to 85°C Typical applications are in notebooks, subnotebooks, palmtop computers, battery-powered equipment, hand-held equipment, peripherals and printers. Order code ST3241ECPR ST3241EBPR Package SSOP-28 (tape and reel) SSOP-28 (tape and reel) Packaging 1350 parts per reel 1350 parts per reel September 2010 Doc ID 9066 Rev 5 1/13 www.st.com 1 Datasheet pdf - http://www.DataSheet4U.co.kr/ Contents ST3241EB - ST3241EC Contents 1 2 3 4 5 6 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 www.DataSheet.net/ 2/13 Doc ID 9066 Rev 5 Datasheet pdf - http://www.DataSheet4U.co.kr/ ST3241EB - ST3241EC Pin configuration 1 Pin configuration Figure 1. Pin configuration CS10800 Table 2. Pin number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pin description Symbol www.DataSheet.net/ Name and function Positive terminal of inverting charge pump capacitor Negative terminal of inverting charge pump capacitor –5.5 V generated by the charge pump First receiver input voltage Second receiver input voltage Third receiver input voltage Fourth receiver input voltage Fifth receiver input voltage First transmitter output voltage Second transmitter output voltage Third transmitter output voltage Third transmitter input voltage Second transmitter input voltage First transmitter input voltage Fifth receiver output voltage Fourth receiver output voltage C2+ C2 VR1IN R2IN R3IN R4IN R5IN T1OUT T2OUT T3OUT T3IN T2IN T1IN R5OUT R4OUT Doc ID 9066 Rev 5 3/13 Datasheet pdf - http://www.DataSheet4U.co.kr/ Pin configuration Table 2. Pin number 17 18 19 20 21 22 23 24 25 26 27 28 ST3241EB - ST3241EC Pin description (continued) Symbol R3OUT R2OUT R1OUT R2OUTB R1OUTB SHDN EN C1GND VCC V+ C1+ Name and function Third receiver output voltage Second receiver output voltage First receiver output voltage Non-inverting complementary receiver output, always active for wake-up Non-inverting complementary receiver output, always active for wake-up Shutdown control. Active low. Receiver enable. Active low Negative terminal of voltage - charge pump capacitor Ground Supply voltage 5.5 V Generated by the charge pump Positive terminal of voltage - charge pump capacitor Table 3. SHDN 0 0 1 1 Shutdown and enable control truth table EN 0 1 0 1 TOUT HIGH Z HIGH Z www.DataSheet.net/ ROUT ACTIVE HIGH Z ACTIVE HIGH Z ROUTB ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE 4/13 Doc ID 9066 Rev 5 Datasheet pdf - http://www.DataSheet4U.co.kr/ ST3241EB - ST3241EC Maximum ratings 2 Table 4. Symbol VCC V+ VV+ + |V-| Maximum ratings Absolute maximum ratings Parameter Supply voltage Extra positive voltage (Note: 1) Extra negative voltage (Note: 1) (Note: 1) Input voltage Receiver input voltage range Transmitter output voltage range Receiver output voltage range INVALID tSHORT Tstg Short circuit duration on TOUT (one at a time) Storage temperature range Continuous –65 to 150 °.


ST1845 ST3241EB ST3241EC


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