SN74BCT25245DWG4


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SCBS053B − MAY 1990 − REVISED APRIL 1994 • • • • • SN54BCT25245 . . . JT OR W PACKAGE SN74BCT25245 . . . 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) A1 GND A2 A3 GND A4 A5 GND A6 A7 GND A8 1 24 2 23 3 22 4 21 5 20 6 19 7 18 8 17 9 16 10 15 11 14 12 13 DIR B1 B2 VCC B3 B4 B5 B6 VCC B7 B8 OE SN54BCT25245 . . . FK PACKAGE (TOP VIEW) B4 B5 B6 NC VCC B7 B8 description The ′BCT25245 is a 25-Ω octal bus transceiver designed for asynchronous communication between data buses. It improves both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented transceivers. 4 5 3 2 1 28 27 26 25 VCC B2 NC B1 DIR A1 6 24 7 23 8 22 9 21 10 20 19 11 12 13 14 15 16 17 18 OE A8 GND NC A7 A6 GND GND A2 A3 NC GND A4 A5 The device allows data transmission from the A bus to the B bus or from the B bus to the A bus depending upon the logic level at the direction-control (DIR) input. The output-enable (OE) input can disable the device so that both buses are effectively isolated. B3 NC − No internal connection These transceivers 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. The SN54BCT25245 is characterized for operation over the full military temperature range of −55°C to 125°C. The SN74BCT25245 is characterized for operation from 0°C to 70°C. FUNCTION TABLE INPUTS OPERATION OE DIR L L B data to A bus L H A data to B bus H X Isolation Copyright  1994, Texas Instruments Incorporated 


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SCBS053B − MAY 1990 − REVISED APRIL 1994 logic symbol† OE DIR A1 13 24 1 logic diagram (positive logic) G3 DIR 24 3EN1[BA] 3EN2[AB] 13 23 1 B1 A1 OE 1 2 A2 A3 A4 A5 A6 A7 A8 3 22 4 20 6 19 7 18 9 17 10 15 12 14 B2 23 B3 B1 B4 B5 B6 To Seven Other Channels B7 B8 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. 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): Control inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V I/O ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 5.5 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 (B port) . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to VCC Input clamp current, IIK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −30 mA Current into any output in the low state, IO: SN54BCT25245 (A port) . . . . . . . . . . . . . . . . . . . . . . . . . . 250 mA SN54BCT25245 (B port) . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 mA SN74BCT25245 (A port) . . . . . . . . . . . . . . . . . . . . . . . . . . 376 mA SN74BCT25245 (B port) . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 mA Operating free-air temperature range: SN54BCT25245 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55°C to 125°C SN74BCT25245 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • 

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SCBS053B − MAY 1990 − REVISED APRIL 1994 recommended operating conditions SN54BCT25245 SN74BCT25245 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 A port −53 −80 IOH High-level output current B port −3 −3 A port 125 188 IOL Low-level output current B port 20 24 TA Operating free-air temperature High-level input voltage 2 2 −55 125 V V 0 70 mA mA °C electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK VOH VCC = 4.5 V, A port B port A port MIN II = −18 mA IOH = − 53 mA VCC = 4.5 V VCC = 4.75 V, VCC = 4.5 V, −1.2 2.4 3.3 0.38 IIH‡ IIL‡ IOS§ VI = 5.5 V 0.3 VCC = 5.5 V, VI = 2.7 V Control input VCC = 5.5 V, VI = 0.5 V B port only¶ VCC = 5.5 V, VO = 0 A or B port −60 A to B ICCH B to A VCC = 5.5 V A to B ICCL B to A VCC = 5.5 V ICCZ Ci Control input VCC = 5.5 V VCC = 5 V, Cio A port B port VO = 2.5 V or 0.5 V V 0.5 0.25 0.25 0.1 0.1 70 70 20 20 −0.6 −0.6 −0.6 −0.6 −150 −60 −150 36 46 36 46 63 80 63 80 48 60 48 60 95 125 95 125 12 16 12 16 VI = 2.5 V or 0.5 V VCC = 5 V, 0.55 0.5 0.35 A or B port Control input 3.3 0.42 0.7 IOL = 20 mA IOL = 24 mA VCC = 5.5 V, Control input 2.4 0.55 0.8 A or B port II V V 2.7 IOL = 125 mA IOL = 188 mA VCC = 4.5 V −1.2 UNIT 2 IOH = − 3 mA IOL = 94 mA VCC = 4.5 V SN74BCT25245 TYP† MAX MIN 2 IOH = − 80 mA IOH = − 3 mA VOL B port SN54BCT25245 TYP† MAX TEST CONDITIONS 8 8 18 18 8 8 mA µA A mA mA mA mA mA pF pF † All typical values are at VCC = 5 V, TA = 25°C. ‡ For I/O ports, the parameters IIH and IIL include the off-state output current. § Not more than one output should be tested at a time, and the duration of the test should not exceed one second. ¶ Testing for this parameter on the A port is not recommended.    %'(#&% !%!$(% )("! % $ '(#&1$ ( $0% )&$ ' $1$+)#$%, &(&!$(! && &% $( )$!'!&% &($ $0% 0&+, $-& %("#$% ($$(1$ $ (0  !&%0$ ( !%%"$ $$ )("! ." %!$, • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • 2−3 

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SCBS053B − MAY 1990 − REVISED APRIL 1994 switching characteristics (see Note 2) PARAMETER FROM (INPUT) VCC = 5 V, CL = 50 pF, R1 = 500 Ω, R2 = 500 Ω, TA = 25°C ′BCT25245 TO (OUTPUT) tPLH tPHL A B tPLH tPHL B A tPZH tPZL OE A tPHZ tPLZ OE A tPZH tPZL OE B tPHZ tPLZ OE B VCC = 4.5 V to 5.5 V, CL = 50 pF, R1 = 500 Ω, R2 = 500 Ω, TA = MIN to MAX† SN54BCT25245 SN74BCT25245 MIN TYP MAX MIN MAX MIN MAX 1.2 3.3 5.1 1.2 5.8 1.2 5.7 1.9 4.3 6.7 1.9 7.6 1.9 7.2 1.2 3.3 4.8 1.2 5.7 1.2 5.5 2.1 4 5.6 2.1 6.4 2.1 6.2 3.7 6.3 8.4 3.7 10.1 3.7 9.6 4.5 7.4 9.2 4.5 11.1 4.5 10.3 1.8 3.7 5.5 1.8 6.4 1.8 6.2 3.3 5.1 7.2 3.3 9.6 3.3 8.3 3.4 5.7 7.9 3.4 9.2 3.4 8.9 4.3 6.6 8.7 4.3 10.1 4.3 9.7 2.7 4.5 6.3 2.7 7.2 2.7 6.9 1.7 4.5 6.8 1.7 8.3 1.7 7.5 † 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.    %'(#&% !%!$(% )("! % $ '(#&1$ ( $0% )&$ ' $1$+)#$%, &(&!$(! && &% $( )$!'!&% &($ $0% 0&+, $-& %("#$% ($$(1$ $ (0  !&%0$ ( !%%"$ $$ )("! ." %!$, 2−4 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • UNIT ns ns ns ns ns ns PACKAGE MATERIALS INFORMATION www.ti.com 9-Aug-2022 TAPE AND REEL INFORMATION REEL DIMENSIONS TAPE DIMENSIONS K0 P1 B0 W Reel Diameter Cavity A0 B0 K0 W P1 A0 Dimension designed to accommodate the component width Dimension designed to accommodate the component length Dimension designed to accommodate the component thickness Overall width of the carrier tape Pitch between successive cavity centers Reel Width (W1) QUADRANT ASSIGNMENTS FOR PIN 1 ORIENTATION IN TAPE Sprocket Holes Q1 Q2 Q1 Q2 Q3 Q4 Q3 Q4 User Direction of Feed Pocket Quadrants *All dimensions are nominal Device SN74BCT25245DWR Package Package Pins Type Drawing SOIC DW 24 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 2000 330.0 24.4 Pack Materials-Page 1 10.75 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 15.7 2.7 12.0 24.0 Q1 PACKAGE MATERIALS INFORMATION www.ti.com 9-Aug-2022 TAPE AND REEL BOX DIMENSIONS Width (mm) W L H *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN74BCT25245DWR SOIC DW 24 2000 350.0 350.0 43.0 Pack Materials-Page 2 PACKAGE MATERIALS INFORMATION www.ti.com 9-Aug-2022 TUBE T - Tube height L - Tube length W - Tube width B - Alignment groove width *All dimensions are nominal Device Package Name Package Type Pins SPQ L (mm) W (mm) T (µm) B (mm) SN74BCT25245DW DW SOIC 24 25 506.98 12.7 4826 6.6 Pack Materials-Page 3 IMPORTANT NOTICE AND DISCLAIMER TI PROVIDES TECHNICAL AND RELIABILITY DATA (INCLUDING DATA SHEETS), DESIGN RESOURCES (INCLUDING REFERENCE DESIGNS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, SAFETY INFORMATION, AND OTHER RESOURCES “AS IS” AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS AND IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS. These resources are intended for skilled developers designing with TI products. You are solely responsible for (1) selecting the appropriate TI products for your application, (2) designing, validating and testing your application, and (3) ensuring your application meets applicable standards, and any other safety, security, regulatory or other requirements. These resources are subject to change without notice. TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource. Other reproduction and display of these resources is prohibited. No license is granted to any other TI intellectual property right or to any third party intellectual property right. TI disclaims responsibility for, and you will fully indemnify TI and its representatives against, any claims, damages, costs, losses, and liabilities arising out of your use of these resources. TI’s products are provided subject to TI’s Terms of Sale or other applicable terms available either on ti.com or provided in conjunction with such TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. TI objects to and rejects any additional or different terms you may have proposed. IMPORTANT NOTICE Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2022, Texas Instruments Incorporated