 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| ST3237 3 to 5.5V, 250Kbps, RS-232 Transceiver with stand-by Feature summary 1A low power shutdown with receivers active Guaranteed data rate - 250Kbps (normal operation) - 1Mbps (very high speed operation) Guaranteed slew rate range - 6V/s (normal operation) - 24V/s (very high speed operation) 0.1F external capacitors Flow-through pinout 500uA low supply current Meet EIA/TIA-232 specifications down to 3V Available in SSOP-28 SSOP Description The ST3237 is a 3V to 5.5V powered EIA/TIA-232 and V.28/V.24 communication interfaces high data-rate capabilities. ST3237 is a transceiver (5 drivers, 3 receivers) for fast modem applications. The device has a proprietary low-dropout transmitter output stage providing true RS-232 performance from a 3V to 5.5V supply using a dual charge pump. The device is guaranteed to run at data rates of 250Kbps in the normal operation mode and 1Mbps in the very high speed operation mode while maintaining RS-232 output levels. Order codes Part number ST3237BPR Temperature range -40 to 85 C Package SSOP-28 (Tape & Reel) Packaging 1350 parts per reel January 2007 Rev 8 1/15 www.st.com 15 Contents ST3237 Contents 1 2 3 4 5 6 7 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 2/15 ST3237 Pin configuration 1 Figure 1. Pin configuration Pin description Table 1. Pin description SYMBOL C2+ GND C2VT1OUT T2OUT T3OUT R1IN R2IN T4OUT R3IN T5OUT EN SHDN VHSCI R1OUTB T5IN R3OUT NAME AND FUNCTION Positive Terminal of Inverting Charge Pump Capacitor Ground Negative Terminal of Inverting Charge Pump Capacitor 5.5V Generated by the Charge Pump First Transmitter Output Voltage Second Transmitter Output Voltage Third Transmitter Output Voltage First Receiver Input Voltage Second Receiver Input Voltage Fourth Transmitter Output Voltage Third Receiver Input Voltage Fifth Transmitter Output Voltage Receiver Enable, Active Low Shutdown Control, Active Low Very High Speed Control Input. Connect to GND for normal operation; connect to VCC for 1Mbps transmission rates. Non Inverting Complementary Receiver Output. Always Active. Fifth Transmitter Input Voltage Third Receiver Output Voltage PlN N 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 3/15 Pin configuration Table 1. Pin description SYMBOL T4IN R2OUT R1OUT T3IN T2IN T1N C1VCC V+ C1+ NAME AND FUNCTION Fourth Transmitter Input Voltage Second Receiver Output Voltage First Receiver Output Voltage Third Transmitter Input Voltage Second Transmitter Input Voltage First Transmitter Input Voltage Negative Terminal of Voltage- Charge Pump Capacitor Supply Voltage -5.5V Generated by the Charge Pump Positive Terminal of Voltage- Charge Pump Capacitor ST3237 PlN N 19 20 21 22 23 24 25 26 27 28 4/15 ST3237 Absolute maximum ratings 2 Table 2. Symbol VCC V+ VV+ +|V-| TIN SHDN, EN VHSCI RIN TOUT Absolute maximum ratings Absolute maximum ratings Parameter Supply voltage Doubled voltage terminal Inverted voltage terminal Value -0.3 to 6 -0.3 to 7 0.3 to -7 13 Transmitter Input voltage range -0.3 to 6 -0.3 to 6 Very high speed control input Receiver input voltage range Transmitter output voltage range -0.3 to (VCC +0.3) 25 13.2 -0.3 to (VCC + 0.3) Continuous -65 to 150 C Unit V V V V V V V V V V ROUT ROUTB Receiver output voltage range tSHORT TSTG Short circuit duration on TOUT (one at a time) Storage temperature range Note: Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. V+ and V- can have a maximum magnitude of +7V, but their absolute addition can not exceed 13 V. 5/15 Electrical characteristics ST3237 3 Table 3. Symbol ISUPPLY ISHDN Electrical characteristics Electrical characteristics (C1 - C4 = 0.1F, VCC = 3V to 5.5V, TA = -40 to 85C, unless otherwise specified. Typical values are referred to TA = 25C) Parameter VCC power supply current Shutdown supply current No load 25C Test conditions VCC = 3V or 5.0V TA = Min. Typ. 0.5 1 Max. 2 10 Unit mA A SHDN=GNDTA = 25C Table 4. Symbol VTIL VTIH IIL IOL VOL VOH Logic input (C1 - C4 = 0.1F, VCC = 3V to 5.5V, TA = -40 to 85C, unless otherwise specified. Typical values are referred to TA = 25C) Parameter Input logic threshold low (1) Test Conditions T-IN, VHSCI, EN, SHDN Min. Typ. Max. 0.8 Unit V V V Input logic threshold high VCC = 3.3V (1) VCC = 5V Input leakage current Output leakage current Output voltage low Output voltage high T-IN, VHSCI, EN, SHDN Receiver disabled IOUT = 1.6mA IOUT = -1mA 2 2.4 0.01 0.05 1.0 10 0.4 VCC0.6 VCC0.1 A A V V 1. Transmitter input hysteresis is typically 250mV Table 5. Symbol VTOUT RTOUT ISC Transmitter (C1 - C4 = 0.1F tested at 3.3V10%, VCC = 3V to 5.5V, TA = -40 to 85C, unless otherwise specified. Typical values are referred to TA = 25C) Parameter Output voltage swing Transmitter output resistance Output short circuit current Test conditions All transmitter outputs are loaded with 3K to GND VCC = V+ = V- = 0VVOUT = 2V Min. 5 Typ. 5.4 3000 25 60 Max. Unit V W mA 6/15 ST3237 Electrical characteristics Table 6. Symbol VRIN VRIL VRIH VRIHYS RRIN Receiver (C1 - C4 = 0.1F tested at 3.3V10%, VCC = 3V to 5.5V, TA = -40 to 85C, unless otherwise specified. Typical values are referred to TA = 25C) Parameter Receiver input voltage operating range RS-232 input threshold low RS-232 input threshold high Input hysteresis Input resistance TA = 25C 3 TA = 25C, VCC = 3.3V TA = 25C, VCC = 5V TA = 25C, VCC = 3.3V TA = 25C, VCC = 5V Test Conditions Min. -25 0.6 0.8 1.2 1.5 1.5 1.8 0.3 5 7 2.4 2.4 Typ. Max. 25 Unit V V V V V V K Table 7. Symbol Timing characteristics (C1 - C4 = 0.1mF tested at 3.3V10%, VCC = 3V to 5.5V, TA = -40 to 85C, unless otherwise specified. Typical values are referred to TA = 25C) Parameter Test Conditions RL = 3KCL= 1000pF one transmitter switching, VHSCI=GND Min. 250 Typ. Max. Unit Kbps DR Maximum data rate RL = 3KCL= 250pF one transmitter switching, VHSCI=VCC VCC= 3 to 5.55V 1000 Kbps tPHLR tPLHR tT_SKEW tR_SKEW tOER tODR Propagation delay input to RIN to ROUT, CL = 150pF output Transmitter skew Receiver skew Receiver output enable time Receiver output disable time |tPHL - tTLH|, VHSCI=GND |tPHL - tTLH|, VHSCI=VCC |tPHL - tTLH| Normal operation Normal operation VCC = TA = 25C RL = 3 to 7K 3.3V measured from +3V to -3V or -3V to +3V CL = 150pF to 1000pF, VHSCI=GND CL = 150pF to 1000pF, VHSCI=VCC CL = 150pF to 2500pF, VHSCI=GND 0.15 100 60 50 80 130 s ns ns ns ns ns SRT Transition slew rate 6 24 4 30 150 30 V/s V/s V/s Note: Transmitter Skew is measured at the transmitter zero cross points 7/15 Application circuit ST3237 4 Figure 2. Application circuit Application circuits Table 8. VCC Capacitance value (F) C1 0.1 0.047 0.1 C2 0.1 0.33 0.47 C3 0.1 0.33 0.47 C4 0.1 0.33 0.47 Cbypass 0.1 0.1 0.1 3.0 to 3.6 4.5 to 5.5 3.0 to 5.5 8/15 ST3237 Typical performance characteristics 5 Figure 3. Typical performance characteristics (unless otherwise specified TJ = 25C) Input voltage range TJ =25C Figure 4. Transfer characteristics for transmitter Figure 5. Transfer characteristics for receiver Figure 6. Transfer characteristics for received Figure 7. Output current vs output high voltage Figure 8. Output current vs output low voltage 9/15 Typical performance characteristics Figure 9. ZZZ ST3237 Receiver input resistance 10/15 ST3237 Package mechanical data 6 Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK(R) 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. ECOPACK specifications are available at: www.st.com. 11/15 Package mechanical data ST3237 SSOP28 MECHANICAL DATA mm. DIM. MIN. A A1 A2 b c D E E1 e K L 0 0.55 0.75 0.050 1.65 0.22 0.09 9.9 7.4 5 10.2 7.8 5.3 0.65 BSC 10 0.95 0 0.022 0.030 1.75 1.85 0.38 0.25 10.5 8.2 5.6 TYP MAX. 2 0.002 0.065 0.009 0.004 0.390 0.291 0.197 0.402 0.307 0.209 0.0256 BSC 10 0.037 0.069 0.073 0.015 0.010 0.413 0.323 0.220 MIN. TYP. MAX. 0.079 inch 12/15 ST3237 Package mechanical data Tape & Reel SSOP28 MECHANICAL DATA mm. DIM. MIN. A C D N T Ao Bo Ko Po P 8.4 10.7 2.9 3.9 11.9 12.8 20.2 60 22.4 8.6 10.9 3.1 4.1 12.1 0.331 0.421 0.114 0.153 0.468 TYP MAX. 330 13.2 0.504 0.795 2.362 0.882 0.339 0.429 0.122 0.161 0.476 MIN. TYP. MAX. 12.992 0.519 inch 13/15 Revision history ST3237 7 Table 9. Date Revision history Revision history Revision 5 6 7 8 Description of Changes TSSOP has been removed. Order codes has been updated and new template. Order codes has been updated. The DR min. value on Table 7. has been corrected: 100kbps ==> 1000kbps. 21-Mar-2005 24-Mar-2006 25-Oct-2006 16-Jan-2007 14/15 ST3237 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. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein. UNLESS OTHERWISE SET FORTH IN ST'S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZE REPRESENTATIVE OF ST, ST PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS, WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY, DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST. ST and the ST logo are trademarks or registered trademarks of ST in various countries. Information in this document supersedes and replaces all information previously supplied. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. (c) 2007 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com 15/15 |
Price & Availability of ST3237BPR
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |