SN54HC157, SN74HC157 QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS

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1 SNHC, SNHC QUADRUPLE 2-LINE TO -LINE DATA SELECTORS/MULTIPLEXERS SCLSB DECEMBER 982 REVISED MAY 99 Package Options Include Plastic Small-Outline (D) and Ceramic Flat (W) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 00-mil DIPs description These monolithic data selectors/multiplexers contain inverters and drivers to supply full data selection to the four output gates. A separate strobe () input is provided. A -bit word is selected from one of two sources and is routed to the four outputs. The HC present true data. The SNHC is characterized for operation over the full military temperature range of C to 2 C. The SNHC is characterized for operation from 0 C to 8 C. FUTION TABLE INPUTS OUTPUT SELECT DATA Y A B H X X X L L L L X L L L H X H L H X L L L H X H H SNHC...J OR W PACKAE SNHC... D OR N PACKAE (TOP VIEW) A B Y ND V CC A B Y SNHC... FK PACKAE (TOP VIEW) B Y A ND V CC Y B No internal connection A logic symbol EN A B A B 2 0 MUX 9 2 Y Y This symbol is in accordance with ANSI/IEEE Std 9-98 and IEC Publication -2. Pin numbers shown are for the D, J, N, and W packages. 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. PRODUCTION DATA information is 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. Copyright 99, Texas Instruments Incorporated POST OFFICE BOX 0 DALLAS, TEXAS 2

2 SNHC, SNHC QUADRUPLE 2-LINE TO -LINE DATA SELECTORS/MULTIPLEXERS SCLSB DECEMBER 982 REVISED MAY 99 logic diagram (positive logic) A 2 B Y A B 0 9 Y 2 Pin numbers shown are for the D, J, N, and W packages. absolute maximum ratings over operating free-air temperature range Supply voltage range, V CC V to V Input clamp current, I IK (V I < 0 or V I > V CC ) (see Note ) ±20 ma Output clamp current, I OK (V O < 0 or V O > V CC ) (see Note ) ±20 ma Continuous output current, I O (V O = 0 to V CC ) ± ma Continuous current through V CC or ND ±0 ma Package thermal impedance, θ JA (see Note 2): D package C/W N package C/W Storage temperature range, T stg C to 0 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:. 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, except for through-hole packages, which use a trace length of zero. 2 POST OFFICE BOX 0 DALLAS, TEXAS 2

3 SNHC, SNHC QUADRUPLE 2-LINE TO -LINE DATA SELECTORS/MULTIPLEXERS recommended operating conditions SCLSB DECEMBER 982 REVISED MAY 99 SNHC SNHC MIN NOM MAX MIN NOM MAX Supply voltage 2 2 V = 2 V.. VIH High-level input voltage =. V.. V = V.2.2 = 2 V VIL Low-level input voltage =. V V = V VI Input voltage 0 0 V VO Output voltage 0 0 V = 2 V tt Input transition (rise and fall) time =. V ns = V TA Operating free-air temperature C electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS TA = 2 C SNHC SNHC MIN TYP MAX MIN MAX MIN MAX 2 V IOH = 20 µa. V VOH VI = VIH or VIL V V IOH = ma. V IOH =.8 ma V V IOL = 20 µa. V VOL VI = VIH or VIL V V IOL = ma. V IOL =.8 ma V II VI = or 0 V ±0. ±00 ±000 ±000 na ICC VI = or 0, IO = 0 V µa Ci 2 V to V pf POST OFFICE BOX 0 DALLAS, TEXAS 2

4 SNHC, SNHC QUADRUPLE 2-LINE TO -LINE DATA SELECTORS/MULTIPLEXERS SCLSB DECEMBER 982 REVISED MAY 99 switching characteristics over recommended operating free-air temperature range, C L = 0 pf (unless otherwise noted) (see Figure ) PARAMETER FROM (INPUT) TO (OUTPUT) TA = 2 C SNHC SNHC MIN TYP MAX MIN MAX MIN MAX 2 V A or B Y. V V V tpd Y. V ns V V 9 0 Y. V 2 29 V V tt Y. V ns V 0 switching characteristics over recommended operating free-air temperature range, C L = 0 pf (unless otherwise noted) (see Figure ) PARAMETER FROM (INPUT) TO (OUTPUT) TA = 2 C SNHC SNHC MIN TYP MAX MIN MAX MIN MAX 2 V A or B Y. V V V tpd Y. V ns V 8 2 V Y. V V V 20 2 tt Y. V 2 ns V operating characteristics, T A = 2 C PARAMETER TEST CONDITIONS TYP Cpd Power dissipation capacitance No load 0 pf POST OFFICE BOX 0 DALLAS, TEXAS 2

5 SNHC, SNHC QUADRUPLE 2-LINE TO -LINE DATA SELECTORS/MULTIPLEXERS PARAMETER MEASUREMENT INFORMATION SCLSB DECEMBER 982 REVISED MAY 99 From Output Under Test Test Point CL (see Note A) Input tplh tphl 0 V LOAD CIRCUIT In-Phase Output 0% 90% 90% tr VOH 0% VOL tf Input 0% 90% 90% tr 0% 0 V tf Out-of-Phase Output tphl 90% 0% 0% tf tplh VOH 90% VOL tr VOLTAE WAVEFORM INPUT RISE AND FALL TIMES VOLTAE WAVEFORMS PROPAATION DELAY AND OUTPUT TRANSITION TIMES 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 MHz, ZO = 0 Ω, tr = ns, tf = 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. Load Circuit and Voltage Waveforms POST OFFICE BOX 0 DALLAS, TEXAS 2

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