ST ST26C31B 数据手册

2024年2月27日发(作者：奇瑞qq308)

ST26C31BCMOS quad 3-state differential line driverFeatures■■■■■■■■■TTL input compatibleTypical propagation delay: 6 nsTypical output skew: 0.5 nsOutput will not load line when VCC = 0 VMeets the requirements of EIA standard

RS-422Operation from single 5 V supply3-state outputs for connection to system busesLow quiescent currentAvailable in surface mountTSSOP16DIP-16SO-16DescriptionThe ST26C31B is a quad differential line driver

designed for digital data transmission over

balanced lines and meets all the requirements of

EIA standard RS-422 while retaining the low

power characteristics of ST26C31B accepts TTL or CMOS input

levels and translates these to RS-422 output

levels. This part uses special outputs circuitry

common to all four drivers. All outputs are

protected against damage due to electrostatic

discharge by diode to VCC and summaryTemperature range-40 to 85 °C-40 to 85 °C-40 to 85 °CPackageDIP-16SO-16 (tape and reel)TSSOP16 (tape and reel)Packaging25 parts per tube / 40 tube per box2500 parts per reel2500 parts per reelOrder codesST26C31BNST26C31BDRST26C31BTRJune 2008Rev 81/15

ContentsST26C31BContents12345Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142/15

ST26C31BPin configuration1 Pin configuration

Figure 1.

Pin connections

Table n°Pin descriptionSymbolAINAOUTAOUTENBOUTBOUTBINGNDCINCOUTCOUTENDOUTDOUTDINVCCInput AChannel A outputChannel A outputENABLEChannel B outputChannel B outputInput BGroundInput CChannel C outputChannel C outputENABLEChannel D outputChannel D outputInput DSupply voltageName and function

3/15

Pin configuration

Truth tableEnableHInputXLHOutputZLHST26C31BTable LOutputZHLAll other combinations of enable inputsNote:L = Low voltage stateH = High logic stateX = Don’t careZ = High impedance4/15

ST26C31BMaximum ratings2 Maximum ratings

Table VCCVINVOUTIIKIOUTICCTSTGSupply voltageDC input voltageDC output voltage (high or low state)Clamp diode currentDC output current per pinDC VCC or gnd currentStorage temperature rangeAbsolute maximum ratings

(1)

(2)ParameterValue-0.5 to 7-0.5 to (VCC + 0.5)-0.5 to 7± 20± 150± 150-65 to +150UnitVVVmAmAmA°te maximum ratings are those values beyond which the safety of the device cannot be guaranteed. They are not

meant to imply that the device should be operated at these limits. The table of electrical characteristics provide conditions

for actual device otherwise specified, all voltage are referenced to ground. All currents into the device pins are positive; all currents

out of the device pins are VCCVINVOUTVOUTTAtr, tf

Recommended operating conditionsParameterSupply voltageDC input voltageDC output voltage (high or low state)DC output voltage (VCC = 0 V or high impedance)Operating temperature rangeMaximum enable input rise or fall timesValue4.5 to 5.50 to VCC0 to VCC0 to 5-40 to +85500UnitVVVV°Cns5/15

Electrical characteristicsST26C31B3 Electrical characteristics

Table VIHVILVOHVOLVTVT-VTVOSVOS-VOSIINICCIOZISCIOFFElectrical characteristics (VCC = 5 V ± 10 %, unless otherwise specified

(1))ValueParameterHigh level input voltageLow level input voltageHigh level output voltageLow level output voltageVIN = VIH

or VIL, IOUT = -20mAVIN = VIH

or VIL, IOUT = +20mA22.53.40.33.10.41.830.4±12000.8±0.5-305002±5-150100-1000.5Test VV?A?AmA?AmA?A?AUnitDifferential output voltageRL = 100 Ω

(2)Difference in differential

output voltageCommon mode output

voltageDifference in common

mode output voltageInput currentQuiescent supply current

(2)RL = 100 Ω

(2)RL = 100 Ω

(2)RL = 100 Ω

(2)VIN = VCC, GND, VIH

or VILIOUT = 0 ?AVIN = VCC or GNDVIN = 2.4 or 0.5 V

(3)3-state output leakage

currentOutput short circuit

currentPower off output leakage

current

(2)VOUT = VCC or GNDENABLE = VIL ENABLE = VIHVIN = VCC or GND(2)

(4)VCC = 0 VVOUT = 6 VVOUT = -0.25 otherwise specified, min./max. limits apply across the recommended operating temperature range. All typical are

given for VCC = 5 V and TA = 25 ° EIA Specification RS422 for exact test ed per pin input. All other input at VCC or is the current sourced when a high output is shorted to ground. Only one output at time should be shorted.

6/15

ST26C31BTable tPLHtPHLSkewtTLHtTHLtPZHtPZLtPHZtPLZCPDCINElectrical characteristicsSwitching characteristics (VCC = 5 V ± 10 %, tr = tf

≤ 6 ns

(1))ValueParameterTest ation delay input to output(2)UnitTyp.60.56111357506Max.1nsnsnsnsnsnsnspFpFS1 OpenS1 OpenS1 OpenS1 ClosedS1 ClosedS1 ClosedS1 Closed2Differential output rise and fall timesOutput enable timeOutput enable timeOutput disable time

(3)Output disable time

(3)Power dissipation capacitance

(4)Input otherwise specified, min./max. limits apply across the recommended operating temperature range. All typical are

given for VCC

= 5 V and TA = 25 ° is defined as the difference in propagation delays between complementary outputs at the 50 % disable time is the delay from the control input being switched to the output transistors tuning off. The actual disable

times are less than indicated due to the delay added by RC time constant of the determines the no load dynamic power consumption, PD = CPDVCC2,

f = ICCVCC, and the no load dynamic current

consumption, PD = CPD VCCf + ICC .7/15

Package mechanical dataST26C31B4 Package mechanical dataIn 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.

ECOPACK specifications are available at: 8/15

ST26C31B

Package mechanical dataPlastic DIP-16 (0.25) mechanical .P001C9/15

Package mechanical data

ST26C31BSO-16 mechanical 1a2bb1Cc1DEee3FGLMS3.84.60.59.85.81.278.894.05.31.270.628° (max.)0.1490.1810.019106.20.350.190.545° (typ.).0.0680.0100.0630.0180.D10/15

ST26C31B

Package mechanical dataTSSOP16 mechanical 1A2bcDEE1eKL0°0.450.600.050.80.190.094.96.24.356.44.40.65 BSC8°0.750°.1.20.151.050.300.205.16.64.480.0020.0310.0070.0040.1930.2440.1690.1970.2520.1730.0256 BSC8°2A1beKcLEDE1PIN 1 IDENTIFICATION10080338D11/15

Package mechanical data

ST26C31BTape & reel SO-16 mechanical .12.9920.519inch.12/15

ST26C31B

Package mechanical dataTape & reel TSSOP16 mechanical .12.9920.519inch.13/15

Revision historyST26C31B5 Revision history

Table 02-May-200612-Jun-2008Document revision historyRevision78Order codes : Table1 on s14/15

ST26C31B

Please Read Carefully:Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve theright to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at anytime, without ST products are sold pursuant to ST’s terms and conditions of sers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes noliability whatsoever relating to the choice, selection or use of the ST products and services described license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of thisdocument 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 productsor services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of suchthird party products or services or any intellectual property contained OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIEDWARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIEDWARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWSOF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOTRECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAININGAPPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY,DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS \"AUTOMOTIVEGRADE\" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER’S OWN of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately voidany warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, anyliability of and the ST logo are trademarks or registered trademarks of ST in various ation in this document supersedes and replaces all information previously ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners.? 2008 STMicroelectronics - All rights reservedSTMicroelectronics group of companiesAustralia - 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 15/15