SN54HCT257 SN74HCT257 SCLS072D HCT257 SN74HCT257D SN74HCT257DR SN74HCT257N - Datasheet Archive

 

QUADRUPLE 2LINE TO 1LINE DATA SELECTORS/MULTIPLEXERS WITH 3STATE OUTPUTS SCLS072D - NOVEMBER 1988 - REVISED SEPTEMBER 2003 D

 

SN54HCT257 SN54HCT257, SN74HCT257 SN74HCT257 QUADRUPLE 2LINE TO 1LINE DATA SELECTORS/MULTIPLEXERS WITH 3STATE OUTPUTS SCLS072D SCLS072D - NOVEMBER 1988 - REVISED SEPTEMBER 2003 D Operating Voltage Range of 4.5 V to 5.5 V D High-Current 3-State Outputs Interface Directly With System Bus D Typical tpd = 17 ns D Low Power Consumption, 80-µA Max ICC D ±6-mA Output Drive at 5 V 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 1A A/B NC VCC OE VCC OE 4A 4B 4Y 3A 3B 3Y 1B 1Y NC 2A 2B 4 3 2 1 20 19 18 5 17 6 16 7 15 8 14 9 10 11 12 13 4A 4B NC 4Y 3A 2Y GND NC 3Y 3B 1 D Sources in High-Performance Systems Buffered Inputs and Outputs SN54HCT257 SN54HCT257 . . . FK PACKAGE (TOP VIEW) SN54HCT257 SN54HCT257 . . . J PACKAGE SN74HCT257 SN74HCT257 . . . D OR N PACKAGE (TOP VIEW) A/B 1A 1B 1Y 2A 2B 2Y GND D Low Input Current of 1 µA Max D Inputs Are TTL-Voltage Compatible D Provide Bus Interface From Multiple NC - No internal connection description/ordering information The 'HCT257 HCT257 devices are designed to multiplex signals from 4-bit data sources to 4-output data lines in bus-organized systems. The 3-state outputs do not load the data lines when the output-enable (OE) input is at the high logic level. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. ORDERING INFORMATION PACKAGE TA PDIP - N ORDERABLE PART NUMBER CDIP - J SN74HCT257D SN74HCT257D Reel of 2500 SN74HCT257DR SN74HCT257DR Reel of 250 SOIC - D SN74HCT257N SN74HCT257N Tube of 40 -40°C to 85°C Tube of 25 SN74HCT257DT SN74HCT257DT Tube of 25 SNJ54HCT257J SNJ54HCT257J TOP-SIDE MARKING SN74HCT257N SN74HCT257N HCT257 HCT257 SNJ54HCT257J SNJ54HCT257J -55°C to 125°C LCCC - FK Tube of 55 SNJ54HCT257FK SNJ54HCT257FK SNJ54HCT257FK SNJ54HCT257FK Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Copyright 2003, Texas Instruments Incorporated UNLESS OTHERWISE NOTED this document contains PRODUCTION DATA information current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 · DALLAS, TEXAS 75265 1 SN54HCT257 SN54HCT257, SN74HCT257 SN74HCT257 QUADRUPLE 2LINE TO 1LINE DATA SELECTORS/MULTIPLEXERS WITH 3STATE OUTPUTS SCLS072D SCLS072D - NOVEMBER 1988 - REVISED SEPTEMBER 2003 FUNCTION TABLE INPUTS OUTPUT Y DATA OE SELECT A/B A B H X X X Z L L L X L L L H X H L H X L L L H X H H logic diagram (positive logic) OE A/B 1A 1B 2A 2B 3A 3B 4A 4B 15 1 2 4 3 5 7 2Y 6 11 9 3Y 10 14 12 13 Pin numbers shown are for the D, J, and N packages. 2 1Y POST OFFICE BOX 655303 · DALLAS, TEXAS 75265 4Y SN54HCT257 SN54HCT257, SN74HCT257 SN74HCT257 QUADRUPLE 2LINE TO 1LINE DATA SELECTORS/MULTIPLEXERS WITH 3STATE OUTPUTS SCLS072D SCLS072D - NOVEMBER 1988 - REVISED SEPTEMBER 2003 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 V to 7 V Input clamp current, IIK (VI < 0 or VI > VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA Output clamp current, IOK (VO < 0 or VO > VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±35 mA Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±70 mA Package thermal impedance, JA (see Note 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73°C/W N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67°C/W Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65°C to 150°C Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. The package thermal impedance is calculated in accordance with JESD 51-7. recommended operating conditions (see Note 3) SN54HCT257 SN54HCT257 SN74HCT257 SN74HCT257 MIN NOM MAX MIN NOM MAX 4.5 5 5.5 4.5 5 5.5 VCC VIH Supply voltage VIL VI Low-level input voltage Input voltage 0 VO tt Output voltage 0 High-level input voltage VCC = 4.5 V to 5.5 V VCC = 4.5 V to 5.5 V 2 2 Input transition (rise and fall) time V V 0.8 VCC VCC UNIT 0.8 V 500 0 500 V VCC VCC 0 ns V TA Operating free-air temperature -55 125 -40 85 °C NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004 SCBA004. electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VCC VOH VI = VIH or VIL IOH = -20 µA IOH = -6 mA 4.5 V VOL VI = VIH or VIL IOL = 20 µA IOL = 6 mA 4.5 V II IOZ VI = VCC or 0 VO = VCC or 0, ICC ICC SN54HCT257 SN54HCT257 MIN MAX SN74HCT257 SN74HCT257 MIN 4.4 4.499 4.4 4.3 3.7 3.84 UNIT 4.4 3.98 MAX V 0.001 0.1 0.1 0.1 0.17 0.26 0.4 0.33 5.5 V VI = VIH or VIL VI = VCC or 0, IO = 0 One input at 0.5 V or 2.4 V, Other inputs at 0 or VCC Ci TA = 25°C MIN TYP MAX ±0.1 ±100 ±1000 ±1000 nA 5.5 V ±0.01 ±0.5 ±10 ±5 µA 8 160 80 µA 1.4 2.4 3 2.9 mA 3 10 10* 10 pF 5.5 V 5.5 V 4.5 V to 5.5 V V * On products compliant to MIL-PRF-38535 MIL-PRF-38535, this parameter is not production tested. This is the increase in supply current for each input that is at one of the specified TTL voltage levels, rather than 0 V or VCC. PRODUCT PREVIEW information concerns products in the formative or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice. POST OFFICE BOX 655303 · DALLAS, TEXAS 75265 3 SN54HCT257 SN54HCT257, SN74HCT257 SN74HCT257 QUADRUPLE 2LINE TO 1LINE DATA SELECTORS/MULTIPLEXERS WITH 3STATE OUTPUTS SCLS072D SCLS072D - NOVEMBER 1988 - REVISED SEPTEMBER 2003 switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 1) FROM (INPUT) TO (OUTPUT) A or B PARAMETER Y VCC MIN TA = 25°C TYP MAX SN54HCT257 SN54HCT257 MIN MAX SN74HCT257 SN74HCT257 MIN MAX 4.5 V OE Y tdis OE Y tt Any 38 40 34 20 30 45 38 5.5 V 17 27 40 34 20 30 45 38 5.5 V 17 27 40 34 4.5 V ten 45 27 4.5 V Y A/B 30 17 4.5 V tpd 20 5.5 V 20 30 45 38 5.5 V 17 27 40 34 4.5 V 8 15 22 19 5.5 V 7 14 21 17 UNIT ns ns ns ns switching characteristics over recommended operating free-air temperature range, CL = 150 pF (unless otherwise noted) (see Figure 1) FROM (INPUT) TO (OUTPUT) A or B PARAMETER Y VCC MIN TA = 25°C TYP MAX SN54HCT257 SN54HCT257 MIN MAX SN74HCT257 SN74HCT257 MIN MAX 4.5 V ten Y OE Y tt Any 57 48 5.5 V 19 35 53 44 22 38 57 48 5.5 V 19 35 53 44 4.5 V A/B 38 4.5 V tpd 22 23 40 60 50 5.5 V 20 38 57 48 4.5 V 17 42 63 53 5.5 V 14 38 57 48 UNIT ns ns ns operating characteristics, TA = 25°C PARAMETER Cpd TEST CONDITIONS Power dissipation capacitance No load PRODUCT PREVIEW information concerns products in the formative or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice. 4 POST OFFICE BOX 655303 · DALLAS, TEXAS 75265 TYP 13 UNIT pF SN54HCT257 SN54HCT257, SN74HCT257 SN74HCT257 QUADRUPLE 2LINE TO 1LINE DATA SELECTORS/MULTIPLEXERS WITH 3STATE OUTPUTS SCLS072D SCLS072D - NOVEMBER 1988 - REVISED SEPTEMBER 2003 PARAMETER MEASUREMENT INFORMATION VCC From Output Under Test CL (see Note A) S1 Test Point RL S2 1 k tPZL tPHZ tdis 3V 1.3 V 0V tPLH In-Phase Output 1.3 V 10% tPHL 90% 90% tr tPHL Out-ofPhase Output 90% VOH 1.3 V 10% V OL tf tPLH 1.3 V 10% 1.3 V 10% tf 50 pF or 150 pF Open Closed Closed Open Open Closed Open Open Open 50 pF tPLZ - LOAD CIRCUIT 1.3 V S2 1 k tpd or tt Input S1 RL tPZH ten CL Closed PARAMETER Output Control (Low-Level Enabling) 50 pF or 150 pF 3V 1.3 V 1.3 V 0V tPZL Output Waveform 1 (See Note B) tPLZ VCC 1.3 V 10% tPZH 90% VOH VOL tr VOLTAGE WAVEFORMS OUTPUT AND 3-STATE BIDIRECTIONAL I/O PROPAGATION DELAY TIME Output Waveform 2 (See Note B) VOL tPHZ 1.3 V 90% VOH 0 V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES FOR 3-STATE OUTPUTS NOTES: A. CL includes probe and test-fixture capacitance. B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. C. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following characteristics: PRR 1 MHz, ZO = 50 , tr = 6 ns, tf = 6 ns. D. The outputs are measured one at a time with one input transition per measurement. E. tPLZ and tPHZ are the same as tdis. F. tPZL and tPZH are the same as ten. G. tPLH and tPHL are the same as tpd. Figure 1. Load Circuit and Voltage Waveforms POST OFFICE BOX 655303 · DALLAS, TEXAS 75265 5 PACKAGE OPTION ADDENDUM www.ti.com 18-Sep-2008 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty SN74HCT257D SN74HCT257D ACTIVE SOIC D 16 40 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74HCT257DE4 SN74HCT257DE4 ACTIVE SOIC D 16 40 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74HCT257DG4 SN74HCT257DG4 ACTIVE SOIC D 16 40 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74HCT257DR SN74HCT257DR ACTIVE SOIC D 16 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74HCT257DRE4 SN74HCT257DRE4 ACTIVE SOIC D 16 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74HCT257DRG4 SN74HCT257DRG4 ACTIVE SOIC D 16 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74HCT257DT SN74HCT257DT ACTIVE SOIC D 16 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74HCT257DTE4 SN74HCT257DTE4 ACTIVE SOIC D 16 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74HCT257DTG4 SN74HCT257DTG4 ACTIVE SOIC D 16 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74HCT257N SN74HCT257N ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type SN74HCT257NE4 SN74HCT257NE4 ACTIVE PDIP N 16 25 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type Lead/Ball Finish MSL Peak Temp (3) (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. 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Addendum-Page 2 PACKAGE MATERIALS INFORMATION www.ti.com 19-Mar-2008 TAPE AND REEL INFORMATION *All dimensions are nominal Device SN74HCT257DR SN74HCT257DR Package Package Pins Type Drawing SOIC D 16 SPQ Reel Reel Diameter Width (mm) W1 (mm) 2500 330.0 16.4 Pack Materials-Page 1 A0 (mm) B0 (mm) K0 (mm) P1 (mm) 6.5 10.3 2.1 8.0 W Pin1 (mm) Quadrant 16.0 Q1 PACKAGE MATERIALS INFORMATION www.ti.com 19-Mar-2008 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN74HCT257DR SN74HCT257DR SOIC D 16 2500 333.2 345.9 28.6 Pack Materials-Page 2 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. 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