74ACT16646DL

54ACT16646, 74ACT16646 16-BIT BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS SCAS127B – MARCH 1990 – REVISED APRIL 1996 D D D D D D D D D Members of the Texas Instruments Widebust Family Inputs Are TTL-Voltage Compatible Independent Registers for A and B Buses Multiplexed Real-Time and Stored Data Flow-Through Architecture Optimizes PCB Layout Distributed VCC and GND Pin Configuration Minimizes High-Speed Switching Noise EPICt (Enhanced-Performance Implanted CMOS) 1-mm 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 description The ’ACT16646 are 16-bit bus transceivers consisting of D-type flip-flops and control circuitry with 3-state outputs arranged for multiplexed transmission of data directly from the data bus or from the internal storage registers. The devices can be used as two 8-bit transceivers or one 16-bit transceiver. Data on the A or B bus is clocked into the registers on the low-to-high transition of the appropriate clock (CLKAB or CLKBA) input. Figure 1 illustrates the four fundamental busmanagement functions that can be performed with the bus transceivers and registers. 54ACT16646 . . . WD PACKAGE 74ACT16646 . . . DL PACKAGE (TOP VIEW) 1DIR 1CLKAB 1SAB GND 1A1 1A2 VCC 1A3 1A4 1A5 GND 1A6 1A7 1A8 2A1 2A2 2A3 GND 2A4 2A5 2A6 VCC 2A7 2A8 GND 2SAB 2CLKAB 2DIR 1 56 2 55 3 54 4 53 5 52 6 51 7 50 8 49 9 48 10 47 11 46 12 45 13 44 14 43 15 42 16 41 17 40 18 39 19 38 20 37 21 36 22 35 23 34 24 33 25 32 26 31 27 30 28 29 1OE 1CLKBA 1SBA GND 1B1 1B2 VCC 1B3 1B4 1B5 GND 1B6 1B7 1B8 2B1 2B2 2B3 GND 2B4 2B5 2B6 VCC 2B7 2B8 GND 2SBA 2CLKBA 2OE Output-enable (OE) and direction-control (DIR) inputs are provided to control the transceiver functions. In the transceiver mode, data present at the high-impedance port may be stored in either register or in both. The select controls (SAB and SBA) can multiplex stored and real-time (transparent mode) data. The circuitry used for select control eliminates the typical decoding glitch that occurs in a multiplexer during the transition between stored and real-time data. DIR determines which bus receives data when OE is low. In the isolation mode (OE high), A data may be stored in one register and/or B data may be stored in the other register. When an output function is disabled, the input function is still enabled and may be used to store and transmit data. Only one of the two buses, A or B, may be driven at a time. The 74ACT16646 is packaged in TI’s shrink small-outline package, which provides twice the functionality of standard small-outline packages in the same printed-circuit-board area. The 54ACT16646 is characterized for operation over the full military temperature range of –55°C to 125°C. The 74ACT16646 is characterized for operation from –40°C to 85°C. 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 54ACT16646, 74ACT16646 16-BIT BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS OE L DIR L CLKAB CLKBA X X SAB X BUS B BUS A BUS A BUS B SCAS127B – MARCH 1990 – REVISED APRIL 1996 SBA L OE L DIR H DIR X X H X X X CLKAB CLKBA ↑ X ↑ X ↑ ↑ SAB SBA X X X X X X OE L L SBA X BUS B DIR L H STORAGE FROM A, B, OR A AND B CLKAB X H or L CLKBA H or L X SAB X H TRANSFER STORED DATA TO A AND/OR B Figure 1. Bus-Management Functions 2 SAB L BUS A BUS A OE CLKBA X REAL-TIME TRANSFER BUS A TO BUS B BUS B REAL-TIME TRANSFER BUS B TO BUS A CLKAB X POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SBA H X 54ACT16646, 74ACT16646 16-BIT BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS SCAS127B – MARCH 1990 – REVISED APRIL 1996 FUNCTION TABLE DATA I/O† INPUTS OPERATION OR FUNCTION OE DIR CLKAB CLKBA SAB SBA A1–A8 B1–B8 X X ↑ X X X Input Unspecified Store A, B unspecified{ X X X ↑ X X Unspecified Input Store B, A unspecified{ H X ↑ ↑ X X Input Input Store A and B data H X H or L H or L X X Input Input Isolation, hold storage L L X X X L Output Input Real-time B data to A bus L L X H or L X H Output Input Stored B data to A bus L H X X L X Input Output Real-time A data to B Bus L H H or L X H X Input Output Stored A data to bus † The data-output functions may be enabled or disabled by various signals at OE or DIR. Data-input functions are always enabled, i.e., data at the bus terminals is stored on every low-to-high transition of the clock inputs. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 54ACT16646, 74ACT16646 16-BIT BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS SCAS127B – MARCH 1990 – REVISED APRIL 1996 logic symbol† 1OE 1DIR 1CLKBA 1SBA 1CLKAB 1SAB 2OE 2DIR 2CLKBA 2SBA 2CLKAB 2SAB 1A1 56 1 55 54 2 G3 3 EN1 [BA] 3 EN2 [AB] C4 G5 C6 3 G7 29 28 30 31 27 26 G10 10 EN8 [BA] 10 EN9 [AB] C11 G12 C13 G14 ≥1 5 1 1A2 1A3 1A4 1A5 1A6 1A7 1A8 2A1 7 1 2A3 2A4 2A5 2A6 2A7 2A8 ≥1 7 51 49 9 48 10 47 12 45 13 44 14 43 15 16 ≥1 8 1 14 12 11D 42 ≥1 1B3 1B4 1B5 1B6 1B7 1B8 2B1 9 41 17 40 19 38 20 37 21 36 23 34 24 33 POST OFFICE BOX 655303 1B2 12 1 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. 4 1B1 2 8 13D 14 2A2 52 5 1 6D 6 4D 5 • DALLAS, TEXAS 75265 2B2 2B3 2B4 2B5 2B6 2B7 2B8 54ACT16646, 74ACT16646 16-BIT BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS SCAS127B – MARCH 1990 – REVISED APRIL 1996 logic diagram (positive logic) 1OE 56 1 1DIR 55 1CLKBA 54 1SBA 2 1CLKAB 3 1SAB TG 1A1 5 C1 1D TG C1 1D TG 52 B1 TG 1A2 1A3 1A4 1A5 1A6 1A7 1A8 2OE 2DIR 2CLKBA 2SBA 2CLKAB 2SAB 6 8 9 10 12 13 14 51 49 48 47 45 44 43 Seven Channels Identical to Channel One Above B2 B3 B4 B5 B6 B7 B8 29 28 30 31 27 26 TG 15 C1 1D 2A1 TG C1 1D TG 42 B1 TG 2A2 2A3 2A4 2A5 2A6 2A7 2A8 16 17 19 20 21 23 24 Seven Channels Identical to Channel One Above POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 41 40 38 37 36 34 33 B2 B3 B4 B5 B6 B7 B8 5 54ACT16646, 74ACT16646 16-BIT BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS SCAS127B – MARCH 1990 – 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 . . . . . . . . . . . 1.4 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) 54ACT16646 MIN MAX 4.5 5.5 4.5 5.5 Supply voltage (see Note 4) VIL VI Low-level input voltage Input voltage 0 VO IOH Output voltage 0 High-level output current IOL Dt/Dv Low-level output current 2 2 0.8 Input transition rise or fall rate TA Operating free-air temperature NOTES: 3. Unused inputs must be held high or low to prevent them from floating. 4. All VCC and GND pins must be connected to the proper voltage power supply. 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. 6 MAX VCC VIH High-level input voltage 74ACT16646 MIN POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 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 54ACT16646, 74ACT16646 16-BIT BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS SCAS127B – MARCH 1990 – REVISED APRIL 1996 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS 24 mA IOH = –24 IOH = –50 mA{ IOL = 50 mA{ IOZ ICC A or B ports} Ci Control inputs MAX 74ACT16646 MIN 4.4 4.4 5.5 V 5.4 5.4 5.4 4.5 V 3.94 3.7 3.8 5.5 V 4.94 4.7 4.8 IO = 0 VI = VCC or GND VO = VCC or GND UNIT V 3.85 0.1 0.1 0.1 5.5 V 0.1 0.1 0.1 4.5 V 0.36 0.5 0.44 5.5 V 0.36 0.5 0.44 V 1.65 5.5 V VO = VCC or GND VI = VCC or GND, MAX 3.85 5.5 V IOL = 75 mA{ VI = VCC or GND One input at 3.4 V, Other inputs at GND or VCC DICCw MIN 4.4 4.5 V IOL = 24 mA Control inputs 54ACT16646 5.5 V IOL = 50 mA II TA = 25°C TYP MAX 5.5 V IOH = –75 mA{ VOL MIN 4.5 V IOH = –50 50 mA VOH VCC 1.65 ±1 mA ±10 ±5 mA 160 80 mA 1 mA 5.5 V ±0.1 5.5 V ±0.5 5.5 V 8 5.5 V 0.9 1 5V ±1 4 pF Cio A or B ports 5V 12 † Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms. ‡ For I/O ports, the parameter IOZ includes the input leakage current. § 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 timing requirements over recommended ranges of supply voltage and operating free-air temperature, (unless otherwise noted) (see Figure 2) TA = 25°C MIN MAX fclock tw Clock frequency 0 tsu Set p time, Setup time A before CLKAB↑ or B before CLKBA↑ th Hold time, A before CLKAB↑ or B before CLKBA↑ Pulse duration, CLKAB or CLKBA high or low 90 54ACT16646 MIN MAX 0 90 74ACT16646 MIN MAX 0 90 5.5 5.5 5.5 Data high 4 4 4 Data low 6 6 6 1.5 1.5 1.5 UNIT MHz ns ns ns 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 7 54ACT16646, 74ACT16646 16-BIT BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS SCAS127B – MARCH 1990 – REVISED APRIL 1996 switching characteristics over recommended ranges of supply voltage and operating free-air temperature, (unless otherwise noted) (see Figure 2) PARAMETER fmax tPLH tPHL tPZH tPZL tPHZ tPLZL tPLH tPHL tPLH tPHL tPLH tPHL tPZH tPZL tPHZ tPLZ FROM (INPUT) TO (OUTPUT) MIN TA = 25°C TYP MAX 90 A or B B or A OE A or B OE A or B CLKBA or CLKAB A or B SAB or SBA{ (with A or B high) A or B SBA or SAB{ (with A or B high) A or B DIR A or B DIR A or B 54ACT16646 MIN 74ACT16646 MAX MIN 90 MAX 90 UNIT MHz 3.9 7.5 9.4 3.9 11.5 3.9 10.6 3.4 7.6 10.6 3.4 12.2 3.4 11.4 3.2 7.7 10.8 3.2 12.9 3.2 11.9 4.2 9 12.2 4.2 14.6 4.2 13.5 5.3 7.7 9.6 5.3 10.4 5.3 10.2 4.9 7.3 9.2 4.9 10.3 4.9 9.9 4.9 8.9 11.1 4.9 13.1 4.9 12.2 5.1 9 11 5.1 13.1 5.1 12.3 5.2 10.3 13.8 5.2 17.2 5.2 15.6 4.9 8.2 10.6 4.9 12.5 4.9 11.7 4.3 7.8 9.9 4.3 12.1 4.3 11.1 5.9 11.2 14.9 5.9 18.2 5.9 16.7 4.5 9.5 13.6 4.5 16.2 4.5 15.2 4.3 9.2 11.8 4.3 14.2 4.3 13.1 4.5 7.9 10.2 4.5 11.2 4.5 10.8 4.4 7.5 9.8 4.4 10.8 4.4 10.4 ns ns ns ns ns ns ns ns † These parameters are measured with the internal output state of the storage register opposite to that of the bus input. operating characteristics, VCC = 5 V, TA = 25°C PARAMETER Cpd d Power dissipation capacitance per transceiver 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. 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 CL = 50 pF, pF f = 1 MHz TYP 58 13 UNIT pF 54ACT16646, 74ACT16646 16-BIT BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS SCAS127B – MARCH 1990 – REVISED APRIL 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 3V Timing Input 1.5 V 0V tw tsu 3V Input 1.5 V th 1.5 V 3V 1.5 V 1.5 V Data Input 0V 0V VOLTAGE WAVEFORMS VOLTAGE WAVEFORMS Output Control (low-level enabling) 3V Input 1.5 V 1.5 V 0V tPHL tPLH In-Phase Output 50% VCC 50% VCC 0V tPZL VOH 50% VCC VOL Output Waveform 2 S1 at GND (see Note B) [ VCC tPLZ Output Waveform 1 S1 at 2 × VCC (see Note B) tPLH tPHL Out-of-Phase Output VOH 50% VCC VOL 3V 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 2. Load Circuit and Voltage Waveforms POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 9 PACKAGE OPTION ADDENDUM www.ti.com 14-Oct-2022 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) Samples (4/5) (6) 74ACT16646DL ACTIVE SSOP DL 56 20 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 ACT16646 Samples 74ACT16646DLR ACTIVE SSOP DL 56 1000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 ACT16646 Samples (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