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| SN54ALS241B, SN54AS241, SN74ALS241B, SN74AS241 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SDAS153B - DECEMBER 1982 - REVISED MAY 1994 * * * 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers PNP Inputs Reduce DC Loading Package Options Include Plastic Small-Outline (DW), Ceramic Chip Carriers (FK), and Standard Plastic and Ceramic 300-mil DIPs (J, N) SN54ALS241B, SN54AS241 . . . J PACKAGE SN74ALS241B, SN74AS241 . . . DW OR N PACKAGE (TOP VIEW) description These octal buffers and line drivers are designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. These devices feature high fan-out and improved fan-in. The SN54ALS241B and SN54AS241 are characterized for operation over the full military temperature range of - 55C to 125C. The SN74ALS241B and SN74AS241 are characterized for operation from 0C to 70C. 1OE 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VCC 2OE 1Y1 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1 SN54ALS241B, SN54AS241 . . . FK PACKAGE (TOP VIEW) 2Y4 1A1 1OE VCC 1A2 2Y3 1A3 2Y2 1A4 4 5 6 7 8 3 2 1 20 19 18 17 16 15 14 9 10 11 12 13 2OE 1Y1 2A4 1Y2 2A3 1Y3 FUNCTION TABLES INPUTS 1OE L L H 1A H L X OUTPUT 1Y H L Z INPUTS 2OE H H L 2A H L X OUTPUT 2Y H L Z 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 (c) 1994, Texas Instruments Incorporated POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 2Y1 GND 2A1 1Y4 2A2 1 SN54ALS241B, SN54AS241, SN74ALS241B, SN74AS241 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SDAS153B - DECEMBER 1982 - REVISED MAY 1994 logic symbol 1OE 1 EN 18 16 14 12 logic diagram (positive logic) 1 1OE 18 1A1 1A2 1A3 1A4 2 4 6 8 1Y1 1Y2 1Y3 1Y4 1A1 2 1Y1 1A2 4 16 1Y2 1A3 2OE 19 EN 6 14 1Y3 12 1Y4 8 2A1 2A2 2A3 2A4 11 13 15 17 9 7 5 3 1A4 2Y1 2Y2 2Y3 2Y4 2A1 11 2OE 19 9 2Y1 7 2Y2 5 2Y3 3 This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. 2A2 13 2A3 15 2A4 17 2Y4 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Voltage applied to a disabled 3-state output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V Operating free-air temperature range: SN54ALS241B, SN54AS241 . . . . . . . . . . . . . . . . . . . - 55C to 125C SN74ALS241B, SN74AS241 . . . . . . . . . . . . . . . . . . . . . . . 0C to 70C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65C to 150C 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. 2 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 SN54ALS241B, SN54AS241, SN74ALS241B, SN74AS241 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SDAS153B - DECEMBER 1982 - REVISED MAY 1994 recommended operating conditions SN54ALS241B MIN VCC VIH VIL IOH IOL TA Supply voltage High-level input voltage Low-level input voltage High-level output current Low-level output current Operating free-air temperature - 55 4.5 2 0.7 - 12 12 125 0 NOM 5 MAX 5.5 SN74ALS241B MIN 4.5 2 0.8 - 15 24 70 NOM 5 MAX 5.5 UNIT V V V mA mA C 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, VCC = 4.5 V II = - 18 mA IOH = - 0.4 mA IOH = - 3 mA IOH = - 12 mA IOH = - 15 mA IOL = 12 mA IOL = 24 mA VO = 2.7 V VO = 0.4 V VI = 7 V VI = 2.7 V VI = 0.4 V VO = 2.25 V Outputs high Outputs low Outputs disabled - 20 9 15 17 MIN SN54ALS241B TYP MAX -1 VCC - 2 2.4 2 2 0.25 0.4 0.25 20 - 20 0.1 20 - 0.1 - 112 17 28 32 - 30 9 15 17 0.4 20 - 20 0.1 20 - 0.1 - 112 15 26 30 mA V A A mA A mA mA 3.2 VCC - 2 2.4 3.2 MIN SN74ALS241B TYP MAX -1 UNIT V VOH V VOL IOZH IOZL II IIH IIL IO ICC VCC = 4 5 V 4.5 VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V All typical values are at VCC = 5 V, TA = 25C. The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 3 SN54ALS241B, SN54AS241, SN74ALS241B, SN74AS241 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SDAS153B - DECEMBER 1982 - REVISED MAY 1994 switching characteristics (see Figure 1) VCC = 4.5 V to 5.5 V, CL = 50 pF, R1 = 500 , R2 = 500 , TA = MIN to MAX SN54ALS241B MIN tPLH tPHL tPZH tPZL tPHZ tPLZ tPZH tPZL tPHZ tPLZ A Y Y Y Y Y 3 1 3 3 2 2 3 3 2 3 MAX 31 17 33 27 17 32 38 30 17 35 SN74ALS241B MIN 3 3 5 5 2 2 5 5 2 3 MAX 11 10 21 21 10 15 21 21 10 15 ns ns ns ns ns PARAMETER FROM (INPUT) TO (OUTPUT) UNIT 1OE 1OE 2OE 2OE For conditions shown MIN or MAX, use the appropriate value specified under recommended operating conditions. 4 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 SN54ALS241B, SN54AS241, SN74ALS241B, SN74AS241 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SDAS153B - DECEMBER 1982 - REVISED MAY 1994 recommended operating conditions SN54AS241 MIN VCC VIH VIL IOH IOL TA Supply voltage High-level input voltage Low-level input voltage High-level output current Low-level output current Operating free-air temperature - 55 4.5 2 0.8 - 12 48 125 0 NOM 5 MAX 5.5 SN74AS241 MIN 4.5 2 0.8 - 15 64 70 NOM 5 MAX 5.5 UNIT V V V mA mA C electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK VCC = 4.5 V, VCC = 4.5 V to 5 5 V 45 5.5 VOH VCC = 4 5 V 4.5 VOL IOZH IOZL II IIH IIL IO ICC VCC = 4.5 V, VCC = 4.75 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V, VCC = 5.5 V TEST CONDITIONS II = - 18 mA IOH = - 2 mA IOH = - 3 mA IOH = - 12 mA IOH = - 15 mA IOL = 48 mA IOL = 64 mA VO = 2.7 V VO = 0.4 V VI = 7 V VI = 2.7 V VI = 0.4 V VO = 2.25 V Outputs high Outputs low Outputs disabled - 50 22 61 35 MIN SN54AS241 TYP MAX -1 VCC - 2 2.4 2.4 2.4 0.27 0.55 0.31 50 - 50 0.1 20 -1 - 150 35 90 56 - 50 22 61 35 0.55 50 - 50 0.1 20 -1 - 150 35 90 56 mA V A A mA A mA mA 3.4 VCC - 2 2.4 3.4 MIN SN74AS241 TYP MAX -1 UNIT V V All typical values are at VCC = 5 V, TA = 25C. The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 5 SN54ALS241B, SN54AS241, SN74ALS241B, SN74AS241 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SDAS153B - DECEMBER 1982 - REVISED MAY 1994 switching characteristics (see Figure 1) VCC = 4.5 V to 5.5 V, CL = 50 pF, R1 = 500 , R2 = 500 , TA = MIN to MAX SN54AS241 MIN tPLH tPHL tPZH tPZL tPHZ tPLZ tPZH tPZL tPHZ tPLZ A Y Y Y Y Y 2 2 2 2 2 2 2 3 3 3 MAX 9 7 10 8 6.5 10.5 11 9.5 7 12 SN74AS241 MIN 2 2 2 2 2 2 3 3 3 3 MAX 6.2 6.2 9 7.5 6 9 10.5 8.5 7 12 ns ns ns ns ns PARAMETER FROM (INPUT) TO (OUTPUT) UNIT 1OE 1OE 2OE 2OE For conditions shown MIN or MAX, use the appropriate value specified under recommended operating conditions. 6 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 SN54ALS241B, SN54AS241, SN74ALS241B, SN74AS241 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SDAS153B - DECEMBER 1982 - REVISED MAY 1994 PARAMETER MEASUREMENT INFORMATION 7V Open S1 R1 = 500 From Output Under Test CL = 50 pF (see Note A) Test Point R2 = 500 SWITCH POSITION TABLE TEST tPLH tPHL tPZH tPZL tPHZ tPLZ S1 Open Open Open Closed Open Closed LOAD CIRCUIT FOR 3-STATE OUTPUTS High-Level Pulse Timing Input tsu Data Input 1.3 V 3.5 V 1.3 V 0.3 V th 3.5 V 1.3 V 0.3 V VOLTAGE WAVEFORMS SETUP AND HOLD TIMES Output Control Input (see Note B) tPLH In-Phase Output 1.3 V 3.5 V 1.3 V 1.3 V 0.3 V tPHL VOH 1.3 V VOL tPLH VOH 1.3 V 1.3 V VOL VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES Waveform 2 S1 Open (see Note C) Waveform 1 S1 Closed (see Note C) tPZH 1.3 V tPZL 1.3 V 1.3 V Low-Level Pulse 1.3 V tw 1.3 V 3.5 V 0.3 V 3.5 V 1.3 V 1.3 V 0.3 V VOLTAGE WAVEFORMS PULSE DURATION 3.5 V 0.3 V tPLZ 3.5 V tPHZ VOL 0.3 V VOH tPHL Out-of-Phase Output 1.3 V 0.3 V 0V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS NOTES: A. CL includes probe and jig capacitance. B. All input pulses are supplied by generators having the following characteristics: PRR 1 MHz, Zo = 50 , tr 2 ns, tf 2 ns. C. 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. D. The outputs are measured one at a time with one transition per measurement. Figure 1. Load Circuit and Voltage Waveforms POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 7 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI's standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE ("CRITICAL APPLICATIONS"). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER'S RISK. In order to minimize risks associated with the customer's applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. TI's publication of information regarding any third party's products or services does not constitute TI's approval, warranty or endorsement thereof. Copyright (c) 1999, Texas Instruments Incorporated |
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