SN54AS250A, SN74AS250A 1-OF-16 DATA GENERATORS/MULTIPLEXERS WITH 3-STATE OUTPUTS SDAS137A – DECEMBER 1983 – REVISED DECEMBER 1994 • • • • 4-Line to 1-Line Multiplexers That Can Select 1-of-16 Data Inputs Applications: Boolean Function Generator Parallel-to-Serial Converter Data Source Selector Buffered 3-State Bus Driver Inputs Permit Multiplexing From n Lines to One Line Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (NT) and Ceramic (JT) 300-mil DIPs SN54AS250A . . . JT PACKAGE SN74AS250A . . . DW OR NT PACKAGE (TOP VIEW) E7 E6 E5 E4 E3 E2 E1 E0 OE W D GND description The ′AS250A devices provide full binary decoding to select 1-of-16 data inputs or use sources as an input with an inverting W output. The selected sources are buffered with symmetrical propagation delay times. This reduces the possibility of transients occurring at the output. OE does not affect the internal operations of the data selector/multiplexer. New data can be set up while the outputs are disabled. The SN54AS250A is characterized for operation over the full military temperature range of – 55°C to 125°C. The SN74AS250A is characterized for operation from 0°C to 70°C. 24 2 23 3 22 4 21 5 20 6 19 7 18 8 17 9 16 10 15 11 14 12 13 VCC E8 E9 E10 E11 E12 E13 E14 E15 A B C E5 E6 E7 NC VCC E8 E9 SN54AS250A . . . FK PACKAGE (TOP VIEW) E4 E3 E2 NC E1 E0 OE 4 3 2 1 28 27 26 5 25 6 24 7 23 8 22 9 21 10 20 11 19 12 13 14 15 16 17 18 E10 E11 E12 NC E13 E14 E15 W D GND NC C B A A buffered output-enable (OE) input can be used for n-line to 1-line cascading. Taking OE high places the output in the high-impedance state. In the high-impedance state, the output neither loads nor drives the bus lines significantly. 1 NC – No internal connection Copyright 1994, Texas Instruments Incorporated 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. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 SN54AS250A, SN74AS250A 1-OF-16 DATA GENERATORS/MULTIPLEXERS WITH 3-STATE OUTPUTS SDAS137A – DECEMBER 1983 – REVISED DECEMBER 1994 logic symbol† FUNCTION TABLE INPUTS OE A B C D Ei OUTPUT W L L L L L E0 E0 L H L L L E1 E1 L L H L L E2 E2 9 OE A B L H H L L E3 E3 C L L L H L E4 E4 D L H L H L E5 E5 E0 L L H H L E6 E6 E1 L H H H L E7 E7 E2 L L L L H E8 E8 E3 L H L L H E9 E9 E4 L L H L H E10 E10 E5 L H H L H E11 E11 E6 L L L H H E12 E12 L H L H H E13 E13 L L H H H E14 E14 L H H H H E15 E15 H X X X X X Z E7 E8 E9 E10 E11 E12 E13 E14 E15 15 MUX EN 0 14 G 13 11 0 15 3 8 7 6 5 4 10 3 2 1 23 22 21 20 19 18 17 16 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Pin numbers shown are for the DW, JT, and NT packages. 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 W SN54AS250A, SN74AS250A 1-OF-16 DATA GENERATORS/MULTIPLEXERS WITH 3-STATE OUTPUTS SDAS137A – DECEMBER 1983 – REVISED DECEMBER 1994 logic diagram (positive logic) E0 E1 E2 E3 E4 E5 E6 E7 Data Inputs E8 E9 E10 E11 E12 E13 E14 E15 A 8 7 6 5 4 3 2 1 10 23 W 22 21 20 19 18 17 16 15 A A B 14 B Data Selects B C 13 C C D 11 D D OE Pin numbers shown are for the DW, JT, and NT packages. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 SN54AS250A, SN74AS250A 1-OF-16 DATA GENERATORS/MULTIPLEXERS WITH 3-STATE OUTPUTS SDAS137A – DECEMBER 1983 – REVISED DECEMBER 1994 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Operating free-air temperature range, TA: SN54AS250A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 125°C SN74AS250A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 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. recommended operating conditions SN54AS250A SN74AS250A MIN NOM MAX MIN NOM MAX 4.5 5 5.5 4.5 5 5.5 UNIT VCC VIH Supply voltage VIL IOH Low-level input voltage 0.8 0.8 V High-level output current – 12 – 15 mA IOL TA Low-level output current 32 48 mA 70 °C High-level input voltage 2 Operating free-air temperature 2 – 55 125 V V 0 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK TEST CONDITIONS VCC = 4.5 V, VCC = 4.5 V to 5.5 V, II = – 18 mA IOH = – 2 mA VCC = 4 4.5 5V IOH = – 12 mA IOH = – 15 mA VOL 5V VCC = 4 4.5 IOL = 32 mA IOL = 48 mA IOZH IOZL VCC = 5.5 V, VCC = 5.5 V, VO = 2.7 V VO = 0.4 V II IIH VCC = 5.5 V, VCC = 5.5 V, VI = 7 V VI = 2.7 V IIL IO§ VCC = 5.5 V, VCC = 5.5 V, VI = 0.4 V VO = 2.25 V VOH ICC VCC = 5.5 V SN54AS250A TYP‡ MAX MIN SN74AS250A TYP‡ MAX MIN – 1.2 VCC – 2 2.4 – 1.2 UNIT V VCC – 2 V 3.3 2.4 0.35 3.3 0.5 0.35 – 30 0.5 V µA 50 50 – 50 – 50 µA 0.1 0.1 mA 20 20 µA – 0.5 – 0.5 mA – 112 mA – 112 – 30 Outputs high 26 42 26 42 Outputs low 31 50 31 50 mA Outputs disabled 30 48 30 48 ‡ All typical values are at VCC = 5 V, TA = 25°C. § The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS. 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN54AS250A, SN74AS250A 1-OF-16 DATA GENERATORS/MULTIPLEXERS WITH 3-STATE OUTPUTS SDAS137A – DECEMBER 1983 – REVISED DECEMBER 1994 switching characteristics (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) VCC = 4.5 V to 5.5 V, CL = 50 pF, R1 = 500 Ω, R2 = 500 Ω, TA = MIN to MAX† SN54AS250A tPLH tPHL Data W tPLH tPHL A B, A, B C, C D W tPZH tPZL OE W tPHZ tPLZ OE W UNIT SN74AS250A MIN MAX MIN MAX 2 9.5 2 8 2 8.5 2 7 4 15.5 4 13 4 12 4 10.5 2 7.5 2 7 2 10 2 9 1.5 6.5 1.5 6 2 8.5 2 6.5 ns ns ns ns † For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 SN54AS250A, SN74AS250A 1-OF-16 DATA GENERATORS/MULTIPLEXERS WITH 3-STATE OUTPUTS SDAS137A – DECEMBER 1983 – REVISED DECEMBER 1994 PARAMETER MEASUREMENT INFORMATION SERIES 54ALS/74ALS AND 54AS/74AS DEVICES 7V RL = R1 = R2 VCC S1 RL R1 Test Point From Output Under Test CL (see Note A) From Output Under Test RL Test Point From Output Under Test CL (see Note A) CL (see Note A) LOAD CIRCUIT FOR BI-STATE TOTEM-POLE OUTPUTS LOAD CIRCUIT FOR OPEN-COLLECTOR OUTPUTS 3.5 V Timing Input Test Point LOAD CIRCUIT FOR 3-STATE OUTPUTS 3.5 V High-Level Pulse 1.3 V R2 1.3 V 1.3 V 0.3 V 0.3 V Data Input tw th tsu 3.5 V 1.3 V 3.5 V Low-Level Pulse 1.3 V 0.3 V 1.3 V 0.3 V VOLTAGE WAVEFORMS SETUP AND HOLD TIMES VOLTAGE WAVEFORMS PULSE DURATIONS 3.5 V Output Control (low-level enabling) 1.3 V 1.3 V 0.3 V tPZL Waveform 1 S1 Closed (see Note B) tPLZ [3.5 V 1.3 V tPHZ tPZH Waveform 2 S1 Open (see Note B) 1.3 V VOL 0.3 V VOH 1.3 V 0.3 V [0 V 3.5 V 1.3 V Input 1.3 V 0.3 V tPHL tPLH VOH In-Phase Output 1.3 V 1.3 V VOL tPLH tPHL VOH Out-of-Phase Output (see Note C) 1.3 V 1.3 V VOL VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS NOTES: A. CL includes probe and jig 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. When measuring propagation delay items of 3-state outputs, switch S1 is open. D. All input pulses have the following characteristics: PRR ≤ 1 MHz, tr = tf = 2 ns, duty cycle = 50%. E. The outputs are measured one at a time with one transition per measurement. Figure 1. Load Circuits and Voltage Waveforms 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 PACKAGE OPTION ADDENDUM www.ti.com 9-Oct-2007 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty Lead/Ball Finish MSL Peak Temp (3) 5962-9056201LA ACTIVE CDIP JT 24 1 TBD A42 SNPB SN74AS250ADW ACTIVE SOIC DW 24 25 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74AS250ADWE4 ACTIVE SOIC DW 24 25 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74AS250ADWG4 ACTIVE SOIC DW 24 25 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74AS250ADWR ACTIVE SOIC DW 24 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74AS250ADWRE4 ACTIVE SOIC DW 24 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74AS250ADWRG4 ACTIVE SOIC DW 24 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74AS250ANT ACTIVE PDIP NT 24 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type SN74AS250ANT3 OBSOLETE PDIP NT 24 TBD Call TI SN74AS250ANTE4 ACTIVE PDIP NT 24 15 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type SNJ54AS250AJT ACTIVE CDIP JT 24 1 TBD A42 SNPB N / A for Pkg Type 15 N / A for Pkg Type Call TI (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. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. Addendum-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 4-Oct-2007 TAPE AND REEL BOX INFORMATION Device SN74AS250ADWR Package Pins DW 24 Site Reel Diameter (mm) Reel Width (mm) A0 (mm) B0 (mm) K0 (mm) P1 (mm) SITE 60 330 24 10.75 15.7 2.7 12 Pack Materials-Page 1 W Pin1 (mm) Quadrant 24 Q1 PACKAGE MATERIALS INFORMATION www.ti.com 4-Oct-2007 Device Package Pins Site Length (mm) Width (mm) Height (mm) SN74AS250ADWR DW 24 SITE 60 346.0 346.0 41.0 Pack Materials-Page 2 MECHANICAL DATA MCER004A – JANUARY 1995 – REVISED JANUARY 1997 JT (R-GDIP-T**) CERAMIC DUAL-IN-LINE 24 LEADS SHOWN PINS ** A 13 24 B 1 24 28 A MAX 1.280 (32,51) 1.460 (37,08) A MIN 1.240 (31,50) 1.440 (36,58) B MAX 0.300 (7,62) 0.291 (7,39) B MIN 0.245 (6,22) 0.285 (7,24) DIM 12 0.070 (1,78) 0.030 (0,76) 0.100 (2,54) MAX 0.320 (8,13) 0.290 (7,37) 0.015 (0,38) MIN 0.200 (5,08) MAX Seating Plane 0.130 (3,30) MIN 0.023 (0,58) 0.015 (0,38) 0°–15° 0.014 (0,36) 0.008 (0,20) 0.100 (2,54) 4040110/C 08/96 NOTES: A. B. C. D. E. All linear dimensions are in inches (millimeters). This drawing is subject to change without notice. This package can be hermetically sealed with a ceramic lid using glass frit. Index point is provided on cap for terminal identification. Falls within MIL STD 1835 GDIP3-T24, GDIP4-T28, and JEDEC MO-058 AA, MO-058 AB POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 MECHANICAL DATA MPDI004 – OCTOBER 1994 NT (R-PDIP-T**) PLASTIC DUAL-IN-LINE PACKAGE 24 PINS SHOWN PINS ** A 24 28 A MAX 1.260 (32,04) 1.425 (36,20) A MIN 1.230 (31,24) 1.385 (35,18) B MAX 0.310 (7,87) 0.315 (8,00) B MIN 0.290 (7,37) 0.295 (7,49) DIM 24 13 0.280 (7,11) 0.250 (6,35) 1 12 0.070 (1,78) MAX B 0.020 (0,51) MIN 0.200 (5,08) MAX Seating Plane 0.125 (3,18) MIN 0.100 (2,54) 0.021 (0,53) 0.015 (0,38) 0°– 15° 0.010 (0,25) M 0.010 (0,25) NOM 4040050 / B 04/95 NOTES: A. All linear dimensions are in inches (millimeters). B. This drawing is subject to change without notice. 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