CY74FCT2574T 8-BIT REGISTER WITH 3-STATE OUTPUTS SCCS076 – OCTOBER 2001 D D D D D D D D D D D D Function and Pinout Compatible With FCT and F Logic 25-Ω Output Series Resistors to Reduce Transmission-Line Reflection Noise Reduced VOH (Typically = 3.3 V) Version of Equivalent FCT Functions Edge-Rate Control Circuitry for Significantly Improved Noise Characteristics Ioff Supports Partial-Power-Down Mode Operation Matched Rise and Fall Times Fully Compatible With TTL Input and Output Logic Levels ESD Protection Exceeds JESD 22 – 2000-V Human-Body Model (A114-A) – 200-V Machine Model (A115-A) – 1000-V Charged-Device Model (C101) 3-State Outputs 12-mA Output Sink Current 15-mA Output Source Current Edge-Triggered D-Type Inputs 250-MHz Typical Switching Rate Q OR SO PACKAGE (TOP VIEW) OE D0 D1 D2 D3 D4 D5 D6 D7 GND 1 20 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 VCC O0 O1 O2 O3 O4 O5 O6 O7 CP description The CY74FCT2574T is a high-speed, low-power, octal D-type flip-flop featuring separate D-type inputs for each flip-flop. On-chip termination resistors at the outputs reduce system noise caused by reflections. The CY74FCT2574T can replace the CY74FCT574T to reduce noise in an existing design. This device has 3-state outputs for bus-oriented applications. A buffered clock (CP) and output-enable (OE) inputs are common to all flip-flops. The CY74FCT2574T is identical to the CY74FCT2374T, except that on the CY74FCT2574T all outputs are on one side of the package and all inputs are on the other side. The flip-flops in the CY74FCT2574T store the state of their individual D inputs that meet the setup-time and hold-time requirements on the low-to-high CP transition. When OE is low, the contents of the flip-flops are available at the outputs. When OE is high, the outputs are in the high-impedance state. The state of OE does not affect the state of the flip-flops. This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. 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. Copyright 2001, Texas Instruments Incorporated PRODUCTION DATA information is 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 CY74FCT2574T 8-BIT REGISTER WITH 3-STATE OUTPUTS SCCS076 – OCTOBER 2001 ORDERING INFORMATION SPEED (ns) ORDERABLE PART NUMBER TOP-SIDE MARKING Tape and reel 5.2 CY74FCT2574CTQCT FCT2574C Tube 5.2 CY74FCT2574CTSOC Tape and reel 5.2 CY74FCT2574CTSOCT Tape and reel 6.5 CY74FCT2574ATQCT Tube 10 CY74FCT2574TSOC Tape and reel 10 CY74FCT2574TSOCT PACKAGE† TA QSOP – Q SOIC – SO 40°C to 85°C –40°C QSOP – Q SOIC – SO FCT2574C FCT2574A FCT2574 † Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. FUNCTION TABLE INPUTS OE OUTPUT O ↑ L H ↑ L L X H Z D CP H L X H = High logic level, L = Low logic level, X = Don’t care, Z = High-impedance state, ↑ = Low-to-high clock transition logic diagram (positive logic) OE CP D0 1 11 2 CP D Q To Seven Other Channels 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 19 O0 CY74FCT2574T 8-BIT REGISTER WITH 3-STATE OUTPUTS SCCS076 – OCTOBER 2001 absolute maximum rating over operating free-air temperature range (unless otherwise noted)† Supply voltage range to ground potential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V DC input voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V DC output voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V DC output current (maximum sink current/pin) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 mA Package thermal impedance, θJA (see Note 1): Q package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68°C/W SO package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58°C/W Ambient temperature range with power applied, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 135°C 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. NOTE 1: The package thermal impedance is calculated in accordance with JESD 51-7. recommended operating conditions (see Note 2) VCC VIH Supply voltage VIL IOH Low-level input voltage IOL TA Low-level output current High-level input voltage MIN NOM MAX UNIT 4.75 5 5.25 V 2 High-level output current Operating free-air temperature –40 V 0.8 V – 15 mA 12 mA 85 °C NOTE 2: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 CY74FCT2574T 8-BIT REGISTER WITH 3-STATE OUTPUTS SCCS076 – OCTOBER 2001 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VIK VOH VCC = 4.75 V, VCC = 4.75 V, IIN = –18 mA IOH = –15 mA VOL ROUT VCC = 4.75 V, VCC = 4.75 V, IOL = 12 mA IOL = 12 mA Vhys II All inputs MIN 2.4 20 VIN = VCC VIN = 2.7 V VCC = 5.25 V, VCC = 5.25 V, VIN = 0.5 V VOUT = 2.7 V VCC = 5.25 V, VCC = 5.25 V, VOUT = 0.5 V VOUT = 0 V Ioff VCC = 0 V, VOUT = 4.5 V ICC ∆ICC VCC = 5.25 V, VIN ≤ 0.2 V, VIN ≥ VCC – 0.2 V § VCC = 5.25 V, VIN = 3.4 V , f1 = 0, Outputs open ICCD¶ VCC = 5.25 V, Outputs open, One input switching at 50% duty cycle, OE = GND, VIN ≤ 0.2 V or VIN ≥ VCC – 0.2 V VIN ≤ 0.2 V or VIN ≥ VCC – 0.2V IOZH IOZL IOS‡ MAX UNIT –0.7 –1.2 V 3.3 V 0.3 0.55 V 25 40 Ω 5 µA ±1 µA ±1 µA 10 µA 0.2 VCC = 5.25 V, VCC = 5.25 V, IIH IIL TYP† V –10 µA –225 mA ±1 µA 0.1 0.2 mA 0.5 2 mA 0.06 0.12 mA/ MHz 0.7 1.4 VIN = 3.4 V or GND VIN ≤ 0.2 V or VIN ≥ VCC – 0.2 V 1.2 3.4 1.6 3.2|| VIN = 3.4 V or GND 3.9 12.2|| Ci 5 10 Co 9 12 IC# 25 V, V VCC = 5 5.25 Outputs open,, f0 = 10 MHz, OE = GND –60 One bit switching at f1 = 5 MHz at 50% duty cycle Eight bits switching at f1 = 2.5 MHz at 50% duty cycle –120 mA pF pF † Typical values are at VCC = 5 V, TA = 25°C. ‡ Not more than one output should be shorted at a time. Duration of short should not exceed one second. The use of high-speed test apparatus and/or sample-and-hold techniques are preferable to minimize internal chip heating and more accurately reflect operational values. Otherwise, prolonged shorting of a high output can raise the chip temperature well above normal and cause invalid readings in other parametric tests. In any sequence of parameter tests, IOS tests should be performed last. § Per TTL-driven input (VIN = 3.4 V); all other inputs at VCC or GND ¶ This parameter is derived for use in total power-supply calculations. # IC = ICC + ∆ICC × DH × NT + ICCD (f0/2 + f1 × N1) Where: IC = Total supply current ICC = Power-supply current with CMOS input levels ∆ICC = Power-supply current for a TTL high input (VIN = 3.4 V) DH = Duty cycle for TTL inputs high NT = Number of TTL inputs at DH ICCD = Dynamic current caused by an input transition pair (HLH or LHL) f0 = Clock frequency for registered devices, otherwise zero f1 = Input signal frequency N1 = Number of inputs changing at f1 All currents are in milliamperes and all frequencies are in megahertz. || Values for these conditions are examples of the ICC formula. 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 CY74FCT2574T 8-BIT REGISTER WITH 3-STATE OUTPUTS SCCS076 – OCTOBER 2001 timing requirements over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1) CY74FCT2574T MIN CY74FCT2574AT MAX MIN MAX CY74FCT2574CT MIN MAX UNIT tw tsu Pulse duration, CP 7 5 4 ns Setup time, data before CP↑ 2 2 1.5 ns th Hold time, data after CP↑ 1.5 1.5 1 ns switching characteristics over operating free-air temperature range (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) tPLH tPHL CP O tPZH tPZL OE O tPHZ tPLZ OE O POST OFFICE BOX 655303 CY74FCT2574T CY74FCT2574AT CY74FCT2574CT MIN MAX MIN MAX MIN MAX 2 10 2 6.5 2 5.2 2 10 2 6.5 2 5.2 1.5 12.5 1.5 6.5 1.5 6.2 1.5 12.5 1.5 6.5 1.5 6.2 1.5 8 1.5 5.5 1.5 5 1.5 8 1.5 5.5 1.5 5 • DALLAS, TEXAS 75265 UNIT ns ns ns 5 CY74FCT2574T 8-BIT REGISTER WITH 3-STATE OUTPUTS SCCS076 – OCTOBER 2001 PARAMETER MEASUREMENT INFORMATION 7V From Output Under Test From Output Under Test Test Point CL = 50 pF (see Note A) Open TEST GND CL = 50 pF (see Note A) 500 Ω S1 500 Ω S1 Open 7V Open tPLH/tPHL tPLZ/tPZL tPHZ/tPZH 500 Ω LOAD CIRCUIT FOR 3-STATE OUTPUTS LOAD CIRCUIT FOR TOTEM-POLE OUTPUTS 3V 1.5 V Timing Input 0V tw tsu 3V 1.5 V Input 1.5 V th 3V 1.5 V Data Input 1.5 V 0V 0V VOLTAGE WAVEFORMS PULSE DURATION VOLTAGE WAVEFORMS SETUP AND HOLD TIMES 3V 1.5 V Input 1.5 V 0V tPLH tPHL 1.5 V 1.5 V VOL tPHL Out-of-Phase Output tPLZ ≈3.5 V 1.5 V tPZH VOH 1.5 V VOL 1.5 V 0V Output Waveform 1 (see Note B) tPLH 1.5 V 1.5 V tPZL VOH In-Phase Output 3V Output Control Output Waveform 2 (see Note B) VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES INVERTING AND NONINVERTING OUTPUTS VOL + 0.3 V VOL tPHZ 1.5 V VOH – 0.3 V VOH ≈0 V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES LOW- AND HIGH-LEVEL ENABLING 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. 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 Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and applications using TI components. To minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards. TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information published by TI regarding third–party products or services does not constitute a license from TI to use such products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI. Reproduction of information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for such altered documentation. Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements. Mailing Address: Texas Instruments Post Office Box 655303 Dallas, Texas 75265 Copyright 2001, Texas Instruments Incorporated