SN74BCT25244NSRE4

SN54BCT25244, SN74BCT25244 25-Ω OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCBS064A – JUNE 1990 – REVISED NOVEMBER 1993 • • • • • SN54BCT25244 . . . JT OR W PACKAGE SN74BCT25244 . . . DW OR NT PACKAGE (TOP VIEW) State-of-the-Art BiCMOS Design Significantly Reduces ICCZ ESD Protection Exceeds 2000 V Per MIL-STD-883C, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0) Designed to Facilitate Incident-Wave Switching for Line Impedances of 25 Ω or Greater Distributed VCC and GND Pins Minimize Noise Generated by the Simultaneous Switching of Outputs Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK) and Flatpacks (W), and Standard Plastic and Ceramic 300-mil DIPs (JT, NT) 1Y1 GND 1Y2 1Y3 GND 1Y4 2Y1 GND 2Y2 2Y3 GND 2Y4 1 24 2 23 3 22 4 21 5 20 6 19 7 18 8 17 9 16 10 15 11 14 12 13 1OE 1A1 1A2 VCC 1A3 1A4 2A1 2A2 VCC 2A3 2A4 2OE SN54BCT25244 . . . FK PACKAGE (TOP VIEW) 1A4 2A1 2A2 NC VCC 2A3 2A4 description These 25-Ω 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. 4 1A3 VCC 1A2 NC 1A1 1OE 1Y1 3 2 1 28 27 26 25 6 24 7 23 8 22 9 21 10 20 19 11 12 13 14 15 16 17 18 2OE 2Y4 GND NC 2Y3 2Y2 GND GND 1Y2 1Y3 NC GND 1Y4 2Y1 These buffers are capable of sinking 188-mA IOL, which facilitates switching 25-Ω transmission lines on the incident wave. The distributed VCC and GND pins minimize switching noise for more reliable system operation. 5 When the output-enable (1OE and 2OE) inputs are low, the device transmits data from the A inputs to the Y outputs. When 1OE and 2OE are high, the outputs are in the high-impedance state. NC – No internal connection The SN54BCT25244 is characterized for operation over the full military temperature range of – 55°C to 125°C. The SN74BCT25244 is characterized for operation from 0°C to 70°C. FUNCTION TABLE (each buffer/driver) INPUTS OE A OUTPUT Y L H H L L L H X Z Copyright  1993, 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 SN54BCT25244, SN74BCT25244 25-Ω OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCBS064A – JUNE 1990 – REVISED NOVEMBER 1993 logic symbol† 1OE 1A1 1A2 1A3 1A4 24 logic diagram (positive logic) 1OE EN 23 1 22 1 3 20 4 19 6 1Y1 1A1 13 1Y3 1A2 2A2 2A3 2A4 18 EN 17 1 7 9 15 10 14 12 1 22 3 20 4 1Y3 19 6 1Y4 1Y1 1Y2 1Y4 1A4 2A1 23 1Y2 1A3 2OE 24 2Y1 2Y2 2Y3 2OE 13 2Y4 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. 2A1 2A2 2A3 2A4 18 7 17 9 15 10 14 12 2Y1 2Y2 2Y3 2Y4 Pin numbers shown are for the DW, JT, NT, and W packages. 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 (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 30 mA Current into any output in the low state, IO: SN54BCT25244 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250 mA SN74BCT25244 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 376 mA Operating free-air temperature range: SN54BCT25244 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 125°C SN74BCT25244 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed. 2–2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN54BCT25244, SN74BCT25244 25-Ω OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCBS064A – JUNE 1990 – REVISED NOVEMBER 1993 recommended operating conditions (see Note 2) SN54BCT25244 SN74BCT25244 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 – 53 – 80 mA 188 mA 70 °C High-level input voltage 2 2 Low-level output current V 125 TA Operating free-air temperature NOTE 2: Unused or floating inputs must be held high or low. – 55 125 V 0 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK VOH VOL TEST CONDITIONS VCC = 4.5 V, VCC = 4.75 V, II = –18 mA IOH = – 3 mA VCC = 4 4.5 5V IOH = – 53 mA IOH = – 80 mA VCC = 4.5 V SN54BCT25244 MIN TYP† MAX SN74BCT25244 MIN TYP† MAX –1.2 –1.2 V 2.7 V 2 2 IOL = 94 mA IOL = 125 mA 0.38 0.55 0.42 0.55 V 0.8 IOL = 188 mA VI = 5.5 V 0.7 II IIH VCC = 5.5 V, VCC = 5.5 V, IIL IOZH VCC = 5.5 V, VCC = 5.5 V, IOZL ICCL VCC = 5.5 V, VCC = 5.5 V, Outputs open 90 119 ICCH ICCZ VCC = 5.5 V, VCC = 5.5 V, Outputs open 59 78 7 11 Ci VCC = 5 V, VCC = 5 V, VI = 2.5 V or 0.5 V VO = 2.5 V or 0.5 V Co UNIT VI = 2.7 V VI = 0.5 V VO = 2.7 V VO = 0.5 V Outputs open 0.1 0.1 mA 20 20 µA – 0.6 – 0.6 mA 50 50 µA – 50 – 50 µA 90 119 mA 59 78 mA 7 11 mA 5.5 5.5 pF 17 17 pF † All typical values are at VCC = 5 V, TA = 25°C. switching characteristics over recommended ranges of supply voltage and operating free-air temperature, CL = 50 pF (unless otherwise noted) (see Note 3) FROM (INPUT) TO (OUTPUT) tPLH tPHL A Y tPZH tPZL OE Y tPHZ tPLZ OE Y PARAMETER VCC = 5 V, TA = 25°C SN54BCT25244 SN74BCT25244 MIN TYP MAX MIN MAX MIN MAX 1 3.2 4.9 1 5.6 1 5.5 2 4 5.6 2 6.3 2 6 3.2 5.6 8.5 3.2 9.7 3.2 9.3 3.7 6.3 9.2 3.7 10.4 3.7 10.2 1.6 3.6 5.5 1.6 6.5 1.6 6.3 3.1 5.3 7.8 3.1 9.5 3.1 8.4 UNIT ns ns ns NOTE 3: Load circuits and voltage waveforms are shown in Section 1. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 2–3 SN54BCT25244, SN74BCT25244 25-Ω OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCBS064A – JUNE 1990 – REVISED NOVEMBER 1993 2–4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 PACKAGE OPTION ADDENDUM www.ti.com 10-Dec-2020 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) Device Marking (3) (4/5) (6) SN74BCT25244DW ACTIVE SOIC DW 24 25 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 BCT25244 SN74BCT25244DWR ACTIVE SOIC DW 24 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 BCT25244 (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) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of