QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS

www.DataSheet4U.com SN54HCT157, SN74HCT157 QUADRUPLE 2 LINE TO 1 LINE DATA SELECTORS/MULTIPLEXERS SCLS071D − NOVEMBER 1988 − REVISED OCTOBER 2003 D Operating Voltage Range of 4.5 V to 5.5 V D High-Current Outputs Drive Up To 15 LSTTL Loads D Typical tpd = 15 ns D Low Power Consumption, 80-µA Max ICC SN54HCT157 . . . J OR W PACKAGE SN74HCT157 . . . D OR N PACKAGE (TOP VIEW) D D D D ±6-mA Output Drive at 5 V Low Input Current of 1 µA Max Inputs Are TTL-Voltage Compatible Buffered Inputs and Outputs SN54HCT157 . . . FK PACKAGE (TOP VIEW) NC − No internal connection description/ordering information These data selectors/multiplexers contain inverters and drivers to supply full data selection to the four output gates. A separate strobe (G) input is provided. A 4-bit word is selected from one of two sources and is routed to the four outputs. ORDERING INFORMATION TA PDIP − N −40°C to 85°C PACKAGE† Tube of 25 Tube of 40 SOIC − D CDIP − J −55 C 125°C −55°C to 125 C CFP − W Reel of 2500 Reel of 250 Tube of 25 Tube of 150 ORDERABLE PART NUMBER SN74HCT157N SN74HCT157D SN74HCT157DR SN74HCT157DT SNJ54HCT157J SNJ54HCT157W SNJ54HCT157J SNJ54HCT157W HCT157 TOP-SIDE MARKING SN74HCT157N LCCC − FK Tube of 55 SNJ54HCT157FK SNJ54HCT157FK † 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. 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 2Y GND NC 3Y 3B Copyright  2003, Texas Instruments Incorporated A/B 1A 1B 1Y 2A 2B 2Y GND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VCC G 4A 4B 4Y 3A 3B 3Y 1A A/B NC VCC G 1B 1Y NC 2A 2B 4 5 6 7 8 3 2 1 20 19 18 17 16 15 14 9 10 11 12 13 4A 4B NC 4Y 3A 1 www.DataSheet4U.com SN54HCT157, SN74HCT157 QUADRUPLE 2 LINE TO 1 LINE DATA SELECTORS/MULTIPLEXERS FUNCTION TABLE INPUTS STROBE G H L L L L SELECT A/B X L L H H DATA A X L H X X B X X X L H L L H L H OUTPUT Y SCLS071D − NOVEMBER 1988 − REVISED OCTOBER 2003 logic diagram (positive logic) 1A 2 4 1B 3 1Y 2A 5 7 2B 6 2Y 3A 11 9 3Y 3B 10 4A 14 12 4Y 4B 13 G A/B 15 1 Pin numbers shown are for the D, J, N, and W packages. 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 www.DataSheet4U.com SN54HCT157, SN74HCT157 QUADRUPLE 2 LINE TO 1 LINE DATA SELECTORS/MULTIPLEXERS SCLS071D − NOVEMBER 1988 − REVISED OCTOBER 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, θJA (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) SN54HCT157 MIN VCC VIH VIL VI VO tt Supply voltage High-level input voltage Low-level input voltage Input voltage Output voltage Input transition (rise and fall) time VCC = 4.5 V to 5.5 V VCC = 4.5 V to 5.5 V 4.5 2 0.8 0 0 VCC VCC 500 0 0 NOM 5 MAX 5.5 SN74HCT157 MIN 4.5 2 0.8 VCC VCC 500 NOM 5 MAX 5.5 UNIT V V V V V ns 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. electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VOH VOL II ICC ∆ICC† Ci TEST CONDITIONS VI = VIH or VIL VI = VIH or VIL VI = VCC or 0 VI = VCC or 0, IOH = −20 µA IOH = −6 mA IOL = 20 µA IOL = 6 mA VCC 4.5 V 4.5 V 5.5 V 5.5 V 5.5 V 4.5 V to 5.5 V 1.4 3 TA = 25°C MIN TYP MAX 4.4 3.98 4.499 4.3 0.001 0.17 ±0.1 0.1 0.26 ±100 8 2.4 10 SN54HCT157 MIN 4.4 3.7 0.1 0.4 ±1000 160 3 10* MAX SN74HCT157 MIN 4.4 3.84 0.1 0.33 ±1000 80 2.9 10 V nA µA mA pF V MAX UNIT IO = 0 One input at 0.5 V or 2.4 V, Other inputs at 0 or VCC * On products compliant to 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 www.DataSheet4U.com SN54HCT157, SN74HCT157 QUADRUPLE 2 LINE TO 1 LINE DATA SELECTORS/MULTIPLEXERS switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 1) PARAMETER FROM (INPUT) A or B tpd A/B G tt TO (OUTPUT) Y Y Y Any VCC 4.5 V 5.5 V 4.5 V 5.5 V 4.5 V 5.5 V 4.5 V 5.5 V MIN TA = 25°C TYP MAX 18 15 20 17 18 15 8 7 28 25 32 29 26 23 15 14 SN54HCT157 MIN MAX 42 38 48 43 39 35 22 21 SN74HCT157 MIN MAX 35 32 40 36 33 30 19 17 ns ns UNIT SCLS071D − NOVEMBER 1988 − REVISED OCTOBER 2003 switching characteristics over recommended operating free-air temperature range, CL = 150 pF (unless otherwise noted) (see Figure 1) PARAMETER FROM (INPUT) A or B tpd A/B G tt TO (OUTPUT) Y Y Y Any VCC 4.5 V 5.5 V 4.5 V 5.5 V 4.5 V 5.5 V 4.5 V 5.5 V MIN TA = 25°C TYP MAX 23 19 24 21 21 19 17 14 42 38 46 41 39 35 42 38 SN54HCT157 MIN MAX 63 52 72 61 58 49 63 57 SN74HCT157 MIN MAX 52 46 58 52 48 43 53 48 ns ns UNIT operating characteristics, TA = 25°C PARAMETER Cpd Power dissipation capacitance TEST CONDITIONS No load TYP 12 UNIT pF 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 www.DataSheet4U.com SN54HCT157, SN74HCT157 QUADRUPLE 2 LINE TO 1 LINE DATA SELECTORS/MULTIPLEXERS SCLS071D − NOVEMBER 1988 − REVISED OCTOBER 2003 PARAMETER MEASUREMENT INFORMATION Input (see Note B) From Output Under Test Test Point CL = 50 pF (see Note A) Output 3V 1.3 V tPLH 1.3 V 10% 90% tr LOAD CIRCUIT VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES 1.3 V 0V tPHL 90% VOH 1.3 V 10% V OL tf NOTES: A. CL includes probe and test-fixture capacitance. B. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr = 6 ns, tf = 6 ns. C. The outputs are measured one at a time with one input transition per measurement. D. tPLH and tPHL are the same as tpd. Figure 1. Load Circuit and Voltage Waveforms POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 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. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. 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