54AC16240, 74AC16240 16-BIT BUS DRIVERS WITH 3-STATE OUTPUTS SCAS234B – JULY 1990 – REVISED OCTOBER 1996 D D D D D D D 54AC16240 . . . WD PACKAGE 74AC16240 . . . DL PACKAGE (TOP VIEW) Members of the Texas Instruments Widebus Family 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers Flow-Through Architecture Optimizes PCB Layout Distributed VCC and GND Pin Configuration Minimizes High-Speed Switching Noise EPIC (Enhanced-Performance Implanted CMOS) 1-µm Process 500-mA Typical Latch-Up Immunity at 125°C Package Options Include Plastic 300-mil Shrink Small-Outline (DL) Package Using 25-mil Center-to-Center Pin Spacings and 380-mil Fine-Pitch Ceramic Flat (WD) Package Using 25-mil Center-to-Center Pin Spacings 1OE 1Y1 1Y2 GND 1Y3 1Y4 VCC 2Y1 2Y2 GND 2Y3 2Y4 3Y1 3Y2 GND 3Y3 3Y4 VCC 4Y1 4Y2 GND 4Y3 4Y4 4OE description The ’AC16240 are 16-bit buffers and line drivers designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. They can be used as four 4-bit buffers, two 8-bit buffers, or one 16-bit buffer. These devices provide inverting outputs and symmetrical active-low output-enable (OE) inputs. 1 48 2 47 3 46 4 45 5 44 6 43 7 42 8 41 9 40 10 39 11 38 12 37 13 36 14 35 15 34 16 33 17 32 18 31 19 30 20 29 21 28 22 27 23 26 24 25 2OE 1A1 1A2 GND 1A3 1A4 VCC 2A1 2A2 GND 2A3 2A4 3A1 3A2 GND 3A3 3A4 VCC 4A1 4A2 GND 4A3 4A4 3OE The 74AC16240 is packaged in TI’s shrink small-outline package, which provides twice the I/O pin count and functionality of standard small-outline packages in the same printed circuit board area. The 54AC16240 is characterized for operation over the full military temperature range of –55°C to 125°C. The 74AC16240 is characterized for operation from –40°C to 85°C. FUNCTION TABLE (each 4-bit buffer) INPUTS OUTPUT Y OE A L H L L L H H X Z Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. EPIC and Widebus are trademarks of Texas Instruments Incorporated. Copyright 1996, Texas Instruments Incorporated UNLESS OTHERWISE NOTED this document contains PRODUCTION DATA information 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 54AC16240, 74AC16240 16-BIT BUS DRIVERS WITH 3-STATE OUTPUTS SCAS234B – JULY 1990 – REVISED OCTOBER 1996 logic symbol† 1OE 2OE 3OE 4OE 1A1 1A2 1A3 1A4 2A1 2A2 2A3 2A4 3A1 3A2 3A3 3A4 4A1 4A2 4A3 4A4 1 48 25 24 EN1 EN2 EN3 EN4 47 1 1 3 44 5 43 6 41 8 1 2 40 9 38 11 37 12 36 1 3 13 35 14 33 16 32 17 30 19 1 4 29 20 27 22 26 23 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. 2 2 46 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1Y1 1Y2 1Y3 1Y4 2Y1 2Y2 2Y3 2Y4 3Y1 3Y2 3Y3 3Y4 4Y1 4Y2 4Y3 4Y4 54AC16240, 74AC16240 16-BIT BUS DRIVERS WITH 3-STATE OUTPUTS SCAS234B – JULY 1990 – REVISED OCTOBER 1996 logic diagram (positive logic) 1OE 1A1 1A2 1A3 1A4 2OE 2A1 2A2 2A3 2A4 1 3OE 47 2 46 3 44 5 43 6 1Y1 3A1 1Y2 3A2 1Y3 3A3 1Y4 3A4 48 4OE 41 8 40 9 38 11 37 12 2Y1 4A1 2Y2 4A2 2Y3 4A3 2Y4 4A4 25 36 13 35 14 33 16 32 17 3Y1 3Y2 3Y3 3Y4 24 30 19 29 20 27 22 26 23 4Y1 4Y2 4Y3 4Y4 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 VCC + 0.5 V Output voltage range, VO (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to VCC + 0.5 V Input clamp current, IIK (VI < 0 or VI > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA Output clamp current, IOK (VO < 0 or VO > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±400 mA Maximum power dissipation at TA = 55°C (in still air)(see Note 2): DL package . . . . . . . . . . . . . . . . . . . . 1.2 W Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –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. NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. The maximum package power dissipation is calculated using a junction temperature of 150°C and a board trace length of 750 mils. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 54AC16240, 74AC16240 16-BIT BUS DRIVERS WITH 3-STATE OUTPUTS SCAS234B – JULY 1990 – REVISED OCTOBER 1996 recommended operating conditions (see Note 3) 54AC16240 VCC Supply voltage VIH VCC = 3 V VCC = 4.5 V High-level input voltage VCC = 5.5 V VCC = 3 V VIL Low-level input voltage VI VO 3 5 5.5 NOM MAX 3 5 5.5 2.1 3.15 3.15 0.9 1.35 1.35 1.65 1.65 0 VCC VCC 0 –4 –4 –24 –24 VCC = 5.5 V VCC = 3 V –24 –24 12 12 VCC = 4.5 V VCC = 5.5 V 24 24 24 24 TA Operating free-air temperature NOTE 3: Unused inputs must be held high or low to prevent them from floating. V V 0.9 VCC VCC 0 Input transition rise or fall rate UNIT 3.85 VCC = 3 V VCC = 4.5 V Low-level output current MIN 2.1 0 High-level output current ∆t/∆v MAX VCC = 4.5 V VCC = 5.5 V Output voltage IOL NOM 3.85 Input voltage IOH 74AC16240 MIN V V V mA mA 0 10 0 10 ns/V –55 125 –40 85 °C electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS IOH = – 50 µA VOH IOH = – 4 mA ICC Ci Co TA = 25°C TYP MAX 54AC16240 MIN 74AC16240 MIN 3V 2.9 2.9 2.9 4.5 V 4.4 4.4 4.4 5.5 V 5.4 5.4 5.4 2.58 2.48 2.48 3.94 3.8 3.8 IOH = – 24 mA A 5.5 V 4.94 IOH = – 75 mA† 5.5 V IOL = 12 mA 4.8 4.8 3.85 3.85 MAX UNIT V 3V 0.1 0.1 0.1 4.5 V 0.1 0.1 0.1 5.5 V 0.1 0.1 0.1 3V 0.36 0.44 0.44 4.5 V 0.36 0.44 0.44 5.5 V 0.36 0.44 0.44 1.65 1.65 V IOL = 75 mA† VI = VCC or GND 5.5 V 5.5 V ±0.1 ±1 ±1 µA VO = VCC or GND VI = VCC or GND, 5.5 V ±0.5 ±5 ±5 µA 8 80 80 µA VI = VCC or GND VO = VCC or GND IO = 0 5.5 V 5V 4.5 pF 5V 12 pF † Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms. PRODUCT PREVIEW information concerns products in the formative or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice. 4 MAX 3V IOL = 24 mA II IOZ MIN 4.5 V IOL = 50 µA VOL VCC POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 54AC16240, 74AC16240 16-BIT BUS DRIVERS WITH 3-STATE OUTPUTS SCAS234B – JULY 1990 – REVISED OCTOBER 1996 switching characteristics over recommended operating free-air temperature range, VCC = 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) tPLH tPHL A Y tPZH tPZL OE Y tPHZ tPLZ OE Y MIN TA = 25°C TYP MAX 54AC16240 74AC16240 MIN MAX MIN MAX 1.8 5.4 7.5 1.8 8.3 1.8 8.3 2.5 7 9.3 2.5 10.2 2.5 10.2 2.1 6.1 8.5 2.1 9.5 2.1 9.5 2.9 8.4 11.3 2.9 12.6 2.9 12.6 4.3 6.2 8.3 4.3 8.7 4.3 8.7 3.6 6 7.8 3.6 8.4 3.6 8.4 UNIT ns ns ns switching characteristics over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) tPLH tPHL A Y tPZH tPZL OE Y tPHZ tPLZ OE Y MIN TA = 25°C TYP MAX 54AC16240 74AC16240 MIN MAX MIN MAX 1.3 3.3 5.3 1.3 5.8 1.3 5.8 1.9 4.3 6.5 1.9 7.1 1.9 7.1 1.6 3.8 5.9 1.6 6.6 1.6 6.6 3.2 4.7 7.2 3.2 8.1 3.2 8.1 4.2 6 7.7 4.2 8.1 4.2 8.1 3.4 5.1 6.9 3.4 7.3 3.4 7.3 UNIT ns ns ns operating characteristics, VCC = 5 V, TA = 25°C PARAMETER Cpd d Power dissipation capacitance per latch TEST CONDITIONS Outputs enabled Outputs disabled CL = 50 pF, pF f = 1 MHz TYP 42 6 UNIT pF PRODUCT PREVIEW information concerns products in the formative or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 54AC16240, 74AC16240 16-BIT BUS DRIVERS WITH 3-STATE OUTPUTS SCAS234B – JULY 1990 – REVISED OCTOBER 1996 PARAMETER MEASUREMENT INFORMATION 2 × VCC S1 500 Ω From Output Under Test Open GND TEST S1 tPLH/tPHL tPLZ/tPZL tPHZ/tPZH Open 2 × VCC GND 500 Ω CL = 50 pF (see Note A) LOAD CIRCUIT VCC 50% Input 50% 0V tPHL tPLH In-Phase Output 50% VCC VOH 50% VCC VOL 50% VCC VOH 50% VCC VOL VCC Output Waveform 2 S1 at GND (see Note B) 50% 50% 0V tPZL [ VCC tPLZ Output Waveform 1 S1 at 2 × VCC (see Note B) tPLH tPHL Out-of-Phase Output Output Control (low-level enabling) 50% VCC VOL tPHZ tPZH VOLTAGE WAVEFORMS 20% VCC 50% VCC 80% VCC VOH [0V VOLTAGE WAVEFORMS 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. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr = 3 ns, tf = 3 ns. D. The outputs are measured one at a time with one input transition per measurement. Figure 1. Load Circuit and Voltage Waveforms 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 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. 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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 1998, Texas Instruments Incorporated