SN54ACT574, SN74ACT574 OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS SCAS537C – OCTOBER 1995 – REVISED JANUARY 2000 D SN54ACT574 . . . J OR W PACKAGE SN74ACT574 . . . DB, DW, N, OR PW PACKAGE (TOP VIEW) Inputs Are TTL-Voltage Compatible EPIC (Enhanced-Performance Implanted CMOS) 1-µm Process Package Options Include Plastic Small-Outline (DW), Shrink Small-Outline (DB), and Thin Shrink Small-Outline (PW) Packages, Ceramic Chip Carriers (FK) and Flatpacks (W), and Standard Plastic (N) and Ceramic (J) DIPs OE 1D 2D 3D 4D 5D 6D 7D 8D GND description These 8-bit flip-flops feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. The devices are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. 1 20 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 VCC 1Q 2Q 3Q 4Q 5Q 6Q 7Q 8Q CLK 2D 1D OE VCC SN54ACT574 . . . FK PACKAGE (TOP VIEW) The eight flip-flops of the ’ACT574 devices are D-type edge-triggered flip-flops. On the positive transition of the clock (CLK) input, the Q outputs are set to the logic levels set up at the data (D) inputs. 3D 4D 5D 6D 7D 4 3 2 1 20 19 18 5 17 6 16 7 15 8 14 9 10 11 12 13 2Q 3Q 4Q 5Q 6Q 8D GND CLK 8Q 7Q A buffered output-enable (OE) input can be used to place the eight outputs in either a normal logic state (high or low logic levels) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and the increased drive provide the capability to drive bus lines in a bus-organized system without need for interface or pullup components. 1Q D D OE does not affect internal operations of the flip-flop. Old data can be retained or new data can be entered while the outputs are in the high-impedance state. The SN54ACT574 is characterized for operation over the full military temperature range of –55°C to 125°C. The SN74ACT574 is characterized for operation from –40°C to 85°C. FUNCTION TABLE (each flip-flop) INPUTS OE CLK D OUTPUT Q L ↑ H H L ↑ L L L H or L X Q0 H X 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 is a trademark of Texas Instruments Incorporated. Copyright 2000, 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 SN54ACT574, SN74ACT574 OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS SCAS537C – OCTOBER 1995 – REVISED JANUARY 2000 logic symbol† OE CLK 1D 2D 3D 4D 5D 6D 7D 8D 1 11 logic diagram (positive logic) 1 EN OE C1 2 1D 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 CLK 11 1Q C1 2Q 3Q 2 1D 19 1Q 1D 4Q 5Q To Seven Other Channels 6Q 7Q 8Q † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. 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) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±200 mA Package thermal impedance, θJA (see Note 2): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70°C/W DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58°C/W N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69°C/W PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83°C/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 package thermal impedance is calculated in accordance with JESD 51. 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN54ACT574, SN74ACT574 OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS SCAS537C – OCTOBER 1995 – REVISED JANUARY 2000 recommended operating conditions (see Note 3) SN54ACT574 MAX MIN MAX 4.5 5.5 4.5 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 SN74ACT574 MIN 2 2 0.8 Input transition rise or fall rate 0 UNIT V V 0.8 V VCC VCC V –24 –24 mA 24 24 mA 8 ns/V VCC VCC 8 0 0 0 V TA Operating free-air temperature –55 125 –40 85 °C NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report Implications of Slow or Floating CMOS Inputs, literature number SCBA004. electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS 4.5 V IOH = –50 50 µA VOH IOH = –24 24 mA IOH = –50 mA† IOH = –75 mA† MIN TA = 25°C TYP MAX SN54ACT574 MIN MAX MIN 4.49 4.4 5.5 V 5.4 5.49 5.4 5.4 4.5 V 3.86 3.7 3.76 5.5 V 4.86 4.7 4.76 MAX UNIT 4.4 V 3.85 5.5 V IOL = 24 mA SN74ACT574 4.4 5.5 V IOL = 50 µA VOL VCC 3.85 4.5 V 0.1 0.1 5.5 V 0.1 0.1 0.1 0.1 4.5 V 0.36 0.44 0.44 5.5 V 0.36 0.44 0.44 V IOL = 50 mA† IOL = 75 mA† 5.5 V IOZ II VO = VCC or GND VI = VCC or GND 5.5 V ±0.25 ±5 ±2.5 µA 5.5 V ±0.1 ±1 ±1 µA ICC VI = VCC or GND, IO = 0 One input at 3.4 V, Other inputs at GND or VCC 5.5 V 4 80 40 µA 1.5 1.5 mA ∆ICC‡ 1.65 5.5 V 5.5 V 1.65 0.6 Ci VI = VCC or GND 5V 4.5 † Not more than one output should be tested at a time, and the duration of the test should not exceed 2 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 timing requirements over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1) TA = 25°C MIN MAX tw tsu Pulse duration, CLK high or low th Hold time, data after CLK↑ Setup time, data before CLK↑ SN54ACT574 MIN MAX SN74ACT574 MIN MAX UNIT 3 5 4 ns 2.5 3.5 2.5 ns 1 2 1 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 3 SN54ACT574, SN74ACT574 OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS SCAS537C – OCTOBER 1995 – REVISED JANUARY 2000 switching characteristics over recommended operating free-air temperature range, VCC = 5 V ± 0.5V (unless otherwise noted) (see Figure 1) PARAMETER fmax tPLH tPHL tPZH tPZL tPHZ tPLZ FROM (INPUT) TO (OUTPUT) CLK Q OE Q OE Q MIN TA = 25°C TYP MAX SN54ACT574 MIN MAX SN74ACT574 MIN 70 MAX 100 110 2.5 7 11 1.5 13.5 85 2 12 2 6.5 10 1.5 12.5 1.5 11 2 6.4 9.5 1.5 11 1.5 10 2 6 9 1.5 11 1.5 10 2 7 10.5 1.5 12 1.5 11.5 2 5.5 8.5 1.5 10 1.5 9 UNIT MHz ns ns ns operating characteristics, VCC = 5 V, TA = 25°C PARAMETER Cpd TEST CONDITIONS Power dissipation capacitance CL = 50 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. 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 f = 1 MHz TYP 40 UNIT pF SN54ACT574, SN74ACT574 OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS SCAS537C – OCTOBER 1995 – REVISED JANUARY 2000 PARAMETER MEASUREMENT INFORMATION 2 × VCC S1 500 Ω From Output Under Test CL = 50 pF (see Note A) Open 500 Ω TEST S1 tPLH/tPHL tPLZ/tPZL tPHZ/tPZH Open 2 × VCC Open 3V 1.5 V Timing Input LOAD CIRCUIT 0V th tsu 3V 1.5 V Data Input tw 0V 3V 1.5 V Input 1.5 V VOLTAGE WAVEFORMS 1.5 V 0V VOLTAGE WAVEFORMS Output Control (low-level enabling) 3V 1.5 V 1.5 V 0V tPZL 3V Input 1.5 V 1.5 V 0V tPLH Output tPHL 50% VCC VOH 50% VCC VOL Output Waveform 1 S1 at 2 × VCC (see Note B) tPLZ ≈VCC 50% VCC tPZH Output Waveform 2 S1 at Open (see Note B) VOLTAGE WAVEFORMS VOL + 0.3 V VOL tPHZ 50% VCC VOH – 0.3 V VOH ≈0 V 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 ≤ 2.5 ns, tf ≤ 2.5 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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