SN54BCT241, SN74BCT241 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCBS005D – OCTOBER 1987 – REVISED APRIL 1994 • • • • SN54BCT241 . . . J OR W PACKAGE SN74BCT241 . . . DB, DW OR N PACKAGE (TOP VIEW) State-of-the-Art BiCMOS Design Significantly Reduces ICCZ ESD Protection Exceeds 2000 V Per MIL-STD-883C, Method 3015 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers Package Options Include Plastic Small-Outline (DW) and Shrink Small-Outline (DB) Packages, Ceramic Chip Carriers (FK) and Flatpacks (W), and Standard Plastic and Ceramic 300-mil DIPs (J, N) 1OE 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND 1 20 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 VCC 2OE 1Y1 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1 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. Taken together with the ′BCT240 and ′BCT244, these devices provide the choice of selected combinations of inverting and noninverting outputs, symmetrical OE (active-low output-enable) inputs, and complementary OE and OE inputs. 1A2 2Y3 1A3 2Y2 1A4 4 3 2 1 20 19 18 5 17 6 16 7 15 8 14 9 10 11 12 13 1Y1 2A4 1Y2 2A3 1Y3 2Y1 GND 2A1 1Y4 2A2 The SN54BCT241 is characterized for operation over the full military temperature range of – 55°C to 125°C. The SN74BCT241 is characterized for operation from 0°C to 70°C. 2OE 2Y4 1A1 1OE VCC SN54BCT241 . . . FK PACKAGE (TOP VIEW) FUNCTION TABLES INPUTS 1OE 1A OUTPUT 1Y L H H L L L H X Z INPUTS 2OE 2A OUTPUT 2Y H H H H L L L X Z 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 2–1 SN54BCT241, SN74BCT241 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCBS005D – OCTOBER 1987 – REVISED APRIL 1994 logic symbol† 1OE 1A1 1A2 1A3 1A4 1 logic diagram (positive logic) 1 1OE EN 2 18 4 16 6 14 8 12 1Y1 1A1 2OE 2A1 2A2 2A3 2A4 18 4 16 6 14 8 12 1Y1 1Y2 1Y3 1A2 1Y2 1Y4 1A3 19 2 1Y3 EN 11 9 13 7 15 5 17 3 1A4 1Y4 2Y1 2Y2 2Y3 2OE 19 2Y4 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. 2A1 2A2 2A3 2A4 11 9 13 7 15 5 17 3 2Y1 2Y2 2Y3 2Y4 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)‡ Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.5 V to 7 V Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.5 V to 7 V Voltage range applied to any output in the disabled or power-off state, VO . . . . . . . . . . . . . . . – 0.5 V to 5.5 V Voltage range applied to any output in the high state, VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.5 V to VCC Input clamp current, IIK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 30 mA Current into any output in the low state: SN54BCT241 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 mA SN74BCT241 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA Operating free-air temperature range: SN54BCT241 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 125°C SN74BCT241 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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. NOTE 1: The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2–2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN54BCT241, SN74BCT241 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCBS005D – OCTOBER 1987 – REVISED APRIL 1994 recommended operating conditions SN54BCT241 SN74BCT241 MIN NOM MAX MIN NOM MAX 4.5 5 5.5 4.5 5 5.5 UNIT VCC VIH Supply voltage VIL IIK Low-level input voltage 0.8 0.8 V Input clamp current –18 –18 mA IOH IOL High-level output current – 12 – 15 mA 64 mA TA Operating free-air temperature 70 °C High-level input voltage 2 2 Low-level output current V 48 – 55 125 V 0 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK TEST CONDITIONS VCC = 4.5 V, VOH VCC = 4.5 V II = –18 mA IOH = – 3 mA IOH = – 12 mA IOH = – 15 mA SN54BCT241 TYP† MAX MIN –1.2 2.4 3.3 2 3.2 2 VCC = 4 4.5 5V II IIH VCC = 5.5 V, VCC = 5.5 V, VI = 7 V VI = 2.7 V VCC = 5 5.5 5V V, VI = 0 0.5 5V VCC = 5.5 V, VCC = 5.5 V, VO = 2.7 V VO = 0.5 V VCC = 5.5 V, VCC = 5.5 V, VO = 0 Outputs open 23 43 VCC = 5.5 V, VCC = 5.5 V, Outputs open 53 85 Outputs open 4 10 IOZH IOZL IOS‡ ICCH ICCL ICCZ Ci Any A input 0.38 3.1 0.55 V 0.1 mA 20 20 µA –1 –1 – 1.6 – 1.6 50 50 – 225 mA µA – 50 µA – 225 mA 23 43 mA 53 85 mA 4 10 mA – 50 • DALLAS, TEXAS 75265 0.55 0.1 – 100 VCC = 5 V, VI = 2.5 V or 0.5 V 6 Co VCC = 5 V, VO = 2.5 V or 0.5 V 11 † All typical values are at VCC = 5 V, TA = 25°C. ‡ Not more than one output should be tested at a time, and the duration of the test should not exceed one second. POST OFFICE BOX 655303 V 3.3 0.42 – 100 UNIT V VOL 1OE or 2OE –1.2 2.4 IOL = 48 mA IOL = 64 mA IIL SN74BCT241 TYP† MAX MIN 6 pF 11 pF 2–3 SN54BCT241, SN74BCT241 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCBS005D – OCTOBER 1987 – REVISED APRIL 1994 switching characteristics (see Note 2) PARAMETER FROM (INPUT) TO (OUTPUT) VCC = 5 V, CL = 50 pF, R1 = 500 Ω, R2 = 500 Ω, TA = 25°C VCC = 4.5 V to 5.5 V, CL = 50 pF, R1 = 500 Ω, R2 = 500 Ω, TA = MIN to MAX† ′BCT241 tPLH tPHL A Y tPZH tPZL OE or OE Y tPHZ tPLZ OE or OE Y SN54BCT241 SN74BCT241 MIN TYP MAX MIN MAX MIN MAX 0.5 2.5 4.5 0.5 5.2 0.5 4.9 1 3 5.4 1 6.3 1 5.9 1 5.7 7.8 1 9.1 1 8.7 1 5.2 8.6 1 10 1 9.4 1 5.8 6.8 1 8.4 1 8.1 1 7 8.1 1 11 1 9.9 † For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. NOTE 2: Load circuits and voltage waveforms are shown in Section 1. 2–4 POST OFFICE BOX 655303 UNIT • DALLAS, TEXAS 75265 ns ns ns 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. 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