54ACT16541, 74ACT16541 16-BIT BUFFERS/DRIVERS WITH 3-STATE OUPUTS SCAS208A – JUNE 1992 – REVISED APRIL 1996 D D D D D D D 54ACT16541 . . . WD PACKAGE 74ACT16541 . . . DL PACKAGE (TOP VIEW) Members of the Texas Instruments Widebus Family Inputs Are TTL-Voltage Compatible 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) Packages Using 25-mil Center-to-Center Pin Spacings and 380-mil Fine-Pitch Ceramic Flat (WD) Packages Using 25-mil Center-to-Center Pin Spacings 1OE1 1Y1 1Y2 GND 1Y3 1Y4 VCC 1Y5 1Y6 GND 1Y7 1Y8 2Y1 2Y2 GND 2Y3 2Y4 VCC 2Y5 2Y6 GND 2Y7 2Y8 2OE1 description The ’ACT16541 are noninverting 16-bit buffers composed of two 8-bit sections with separate output-enable signals. For either 8-bit buffer section, the two output-enable (1OE1 and 1OE2 or 2OE1 and 2OE2) inputs must both be low for the corresponding Y outputs to be active. If either output-enable input is high, the outputs of that 8-bit buffer section are in the high-impedance state. 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 1OE2 1A1 1A2 GND 1A3 1A4 VCC 1A5 1A6 GND 1A7 1A8 2A1 2A2 GND 2A3 2A4 VCC 2A5 2A6 GND 2A7 2A8 2OE2 The 74ACT16541 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 54ACT16541 is characterized for operation over the full military temperature range of –55°C to 125°C. The 74ACT16541 is characterized for operation from –40°C to 85°C. FUNCTION TABLE (each 8-bit section) INPUTS OE1 OE2 A OUTPUT Y L L L L L L H H H X X Z X 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 54ACT16541, 74ACT16541 16-BIT BUFFERS/DRIVERS WITH 3-STATE OUPUTS SCAS208A – JUNE 1992 – REVISED APRIL 1996 logic symbol† 1 1OE1 & EN1 48 1OE2 24 2OE1 & EN2 25 2OE2 1A1 1A2 1A3 1A4 1A5 1A6 1A7 1A8 2A1 2A2 2A3 2A4 2A5 2A6 2A7 2A8 47 1 46 2 1 3 44 5 43 6 41 8 40 9 38 11 37 12 36 1 13 2 35 14 33 16 32 17 30 19 29 20 27 22 26 23 1Y1 1Y2 1Y3 1Y4 1Y5 1Y6 1Y7 1Y8 2Y1 2Y2 2Y3 2Y4 2Y5 2Y6 2Y7 2Y8 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. logic diagram (positive logic) 1OE1 1OE2 1A1 1 2OE1 48 47 2OE2 2 1Y1 2A1 24 25 36 POST OFFICE BOX 655303 2Y1 To Seven Other Channels To Seven Other Channels 2 13 • DALLAS, TEXAS 75265 54ACT16541, 74ACT16541 16-BIT BUFFERS/DRIVERS WITH 3-STATE OUPUTS SCAS208A – JUNE 1992 – REVISED APRIL 1996 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 package 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. recommended operating conditions (see Note 3) 54ACT16541 NOM MAX MIN NOM MAX 4.5 5 5.5 4.5 5 5.5 VCC VIH Supply voltage VIL VI Low-level input voltage Input voltage 0 VO IOH Output voltage 0 High-level output current IOL ∆t/∆v Low-level output current High-level input voltage 74ACT16541 MIN 2 2 0.8 Input transition rise or fall rate TA Operating free-air temperature NOTE 3: Unused inputs must be held high or low to prevent them from floating. UNIT V V 0.8 V VCC VCC V –24 –24 mA 24 24 mA VCC VCC 0 0 V 0 10 0 10 ns/V –55 125 –40 85 °C 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 3 54ACT16541, 74ACT16541 16-BIT BUFFERS/DRIVERS WITH 3-STATE OUPUTS SCAS208A – JUNE 1992 – REVISED APRIL 1996 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VCC IOH = –50 50 µA VOH 24 mA IOH = –24 IOH = –75 mA† II IOZ ICC TA = 25°C TYP MAX IOL = 75 mA† VI = VCC or GND VO = VCC or GND VI = VCC or GND, MIN ∆ICC‡ One input at 3.4 V, Other inputs at VCC or GND Ci VI = VCC or GND VO = VCC or GND 74ACT16541 MIN 4.4 4.4 5.5 V 5.4 5.4 5.4 5.5 V 3.9 3.8 3.8 5.5 V 4.94 4.8 4.8 3.85 3.85 0.1 0.1 MAX UNIT V 0.1 5.5 V 0.1 0.1 0.1 4.5 V 0.36 0.44 0.44 5.5 V 0.36 0.44 0.44 1.65 1.65 ±1 ±1 µA 5.5 V IO = 0 MAX 4.4 4.5 V IOL = 24 mA 54ACT16541 4.5 V 5.5 V IOL = 50 µA VOL MIN V 5.5 V ±0.1 5.5 V ±0.5 ±5 ±5 µA 5.5 V 8 80 80 µA 5.5 V 0.9 1 1 mA 5.5 V 4 pF Co 5V 13 † Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms. ‡ This is the increase in supply current for each input that is at one of the specified TTL voltage levels rather than 0 V or VCC. pF 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 54ACT16541 74ACT16541 MIN MAX MIN MAX 3.1 5.9 7.9 3.1 9 3.1 9 2.7 6.3 8.3 2.7 9.2 2.7 9.2 2.8 6.5 8.9 2.8 9.7 2.8 9.7 3.5 7.5 9.9 3.5 11 3.5 11 4.5 8.5 10.3 4.5 11.3 4.5 11.3 4.9 8 9.9 4.9 10.7 4.9 10.7 UNIT ns ns ns operating characteristics, VCC = 5 V, TA = 25°C PARAMETER Cpd d Power dissipation capacitance per buffer/driver TEST CONDITIONS Outputs enabled Outputs disabled 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 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 CL = 50 pF, pF f = 1 MHz TYP 40 9.5 UNIT pF 54ACT16541, 74ACT16541 16-BIT BUFFERS/DRIVERS WITH 3-STATE OUPUTS SCAS208A – JUNE 1992 – REVISED APRIL 1996 PARAMETER MEASUREMENT INFORMATION 2 × VCC S1 500 Ω From Output Under Test Open GND LOAD CIRCUIT Output Control (low-level enabling) 3V 1.5 V 1.5 V 0V tPLH tPHL VOH Output S1 Open 2 × VCC GND 500 Ω CL = 50 pF (see Note A) Input TEST tPLH/tPHL tPLZ/tPZL tPHZ/tPZH 50% VCC 50% VCC VOL 3V 0V tPZL [ VCC tPLZ Output Waveform 1 S1 at 2 × VCC (see Note B) Output Waveform 2 S1 at GND (see Note B) 1.5 V 1.5 V 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 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 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