CY54FCT646T, CY74FCT646T 8-BIT REGISTERED TRANSCEIVERS WITH 3-STATE OUTPUTS SCCS031A – JULY 1994 – REVISED OCTOBER 2001 D D D D D D D D D D Function, Pinout, and Drive Compatible With FCT and F Logic Reduced VOH (Typically = 3.3 V) Versions 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) Independent Register for A and B Buses CY54FCT646T – 48-mA Output Sink Current – 12-mA Output Source Current CY74FCT646T – 64-mA Output Sink Current – 32-mA Output Source Current 3-State Outputs description CY54FCT646T . . . D PACKAGE CY74FCT646T . . . Q OR SO PACKAGE (TOP VIEW) CPAB SAB DIR A1 A2 A3 A4 A5 A6 A7 A8 GND 1 24 2 23 3 22 4 21 5 20 6 19 7 18 8 17 9 16 10 15 11 14 12 13 VCC CPBA SBA G B1 B2 B3 B4 B5 B6 B7 B8 CY54FCT646T . . . L PACKAGE (TOP VIEW) DIR SAB CPAB NC VCC CPBA SBA D 4 3 A1 A2 A3 NC A4 A5 A6 5 2 1 28 27 26 25 6 24 7 23 8 22 9 21 10 20 G B1 B2 NC B3 B4 B5 B6 GND NC B8 B7 A7 A8 19 11 The ’FCT646T devices consist of a bus 12 13 14 15 16 17 18 transceiver circuit with 3-state, D-type flip-flops, and control circuitry arranged for multiplexed transmission of data directly from the input bus or from the internal registers. Data on the A or B bus NC – No internal connection is clocked into the registers as the appropriate clock pin goes to a high logic level. Output-enable (G) and direction (DIR) inputs control the transceiver function. In the transceiver mode,data present at the high-impedance port can be stored in either the A or B register, or in both. Select controls (SAB, SBA) can multiplex stored and real-time (transparent mode) data. DIR determines which bus receives data when G is low. In the isolation mode (G is high), A data can be stored in the B register and/or B data can be stored in the A register. These devices are 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. On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 CY54FCT646T, CY74FCT646T 8-BIT REGISTERED TRANSCEIVERS WITH 3-STATE OUTPUTS SCCS031A – JULY 1994 – REVISED OCTOBER 2001 PIN DESCRIPTION NAME DESCRIPTION A Data register A inputs, data register B outputs B Data register B inputs, data register A outputs CPAB, CPBA Clock-pulse inputs SAB, SBA Output data-source-select inputs DIR, G Output-enable inputs ORDERING INFORMATION SPEED (ns) PACKAGE† TA QSOP – Q Tape and reel 5.4 CY74FCT646CTQCT Tube 5.4 CY74FCT646CTSOC Tape and reel 5.4 CY74FCT646CTSOCT Tape and reel 6.3 CY74FCT646ATQCT Tube 6.3 CY74FCT646ATSOC Tape and reel 6.3 CY74FCT646ATSOCT Tape and reel 9 CY74FCT646TQCT Tube 9 CY74FCT646TSOC Tape and reel 9 CY74FCT646TSOCT LCC – L Tube 6 CY54FCT646CTLMB CDIP – D Tube 7.7 CY54FCT646ATDMB Tube 7.7 CY54FCT646ATLMB Tube 11 SOIC – SO QSOP – Q –40°C to 85°C SOIC – SO QSOP – Q SOIC – SO –55°C 55°C to 125°C ORDERABLE PART NUMBER LCC – L TOP-SIDE MARKING FCT646C FCT646C FCT646A FCT646A FCT646 FCT646 CY54FCT646TLMB † Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. FUNCTION TABLE DATA I/O‡ INPUTS G DIR CPAB CPBA SAB H X H or L H or L X H X ↑ ↑ X L L X X X L L X H or L X L H X X L L H H or L X H SBA OPERATION OR FUNCTION A1–A8 B1–B8 X Input Input Isolation X Input Input Store A and B data L Output Input Real-time B data to A bus H Output Input Stored B data to A bus X Input Output Real-time A data to B bus X Input Output Stored A data to B bus H = High logic level, L = Low logic level, ↑ = Low-to-high transition, X = Don’t care ‡ The data output functions can be enabled or disabled by various signals at the G or DIR inputs. Data input functions always are enabled, i.e., data at the bus pins is stored on every low-to-high transition of the clock inputs. 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 CY54FCT646T, CY74FCT646T 8-BIT REGISTERED TRANSCEIVERS WITH 3-STATE OUTPUTS 21 G L 3 DIR L 1 CPAB X 23 CPBA X 2 SAB X BUS B BUS A BUS A BUS B SCCS031A – JULY 1994 – REVISED OCTOBER 2001 22 SBA L 21 G L 3 DIR H 3 DIR H L X 1 CPAB ↑ X ↑ 23 CPBA X ↑ ↑ 2 SAB L 2 SAB X X X 22 SBA X BUS B BUS A BUS A 21 G L L H 23 CPBA X REAL-TIME TRANSFER BUS A TO BUS B BUS B REAL-TIME TRANSFER BUS B TO BUS A 1 CPAB X 22 SBA X X X STORAGE FROM A AND/OR B 21 G L L 3 DIR† L H 1 CPAB X H or L 23 CPBA H or L X 2 SAB X H 22 SBA H X TRANSFER STORED DATA TO A AND/OR B † Cannot transfer data to A bus and B bus simultaneously. Figure 1. Bus-Management Functions POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 CY54FCT646T, CY74FCT646T 8-BIT REGISTERED TRANSCEIVERS WITH 3-STATE OUTPUTS SCCS031A – JULY 1994 – REVISED OCTOBER 2001 logic diagram (positive logic) G DIR CPBA SBA CPAB SAB 21 3 23 22 1 2 One of Eight Channels D C A1 4 20 B1 D C To Seven Other Channels Pin numbers shown are for the Q and SO packages. absolute maximum ratings 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61°C/W SO package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46°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. 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 CY54FCT646T, CY74FCT646T 8-BIT REGISTERED TRANSCEIVERS WITH 3-STATE OUTPUTS SCCS031A – JULY 1994 – REVISED OCTOBER 2001 recommended operating conditions (see Note 2) CY54FCT646T CY74FCT646T MIN NOM MAX MIN NOM MAX 4.5 5 5.5 4.75 5 5.25 UNIT VCC VIH Supply voltage VIL IOH Low-level input voltage 0.8 0.8 V High-level output current –12 –32 mA IOL TA Low-level output current 48 64 mA 85 °C High-level input voltage 2 Operating free-air temperature –55 2 125 –40 V V 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 5 CY54FCT646T, CY74FCT646T 8-BIT REGISTERED TRANSCEIVERS WITH 3-STATE OUTPUTS SCCS031A – JULY 1994 – REVISED OCTOBER 2001 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK VOH CY54FCT646T TYP† MAX TEST CONDITIONS VCC = 4.5 V, VCC = 4.75 V, IIN = –18 mA IIN = –18 mA VCC = 4.5 V, IOH = –12 mA IOH = –32 mA VCC = 4 4.75 75 V MIN –0.7 –1.2 –0.7 2.4 2.4 Vhys All inputs II VCC = 5.5 V, VCC = 5.25 V, VIN = VCC VIN = VCC 5 IIH VCC = 5.5 V, VCC = 5.25 V, VIN = 2.7 V VIN = 2.7 V ±1 IIL VCC = 5.5 V, VCC = 5.25 V, VIN = 0.5 V VIN = 0.5 V ±1 IOZH VCC = 5.5 V, VCC = 5.25 V, VOUT = 2.7 V VOUT = 2.7 V 10 IOZL VCC = 5.5 V, VCC = 5.25 V, VOUT = 0.5 V VOUT = 0.5 V –10 IOS‡ VCC = 5.5 V, VCC = 5.25 V, VOUT = 0 V VOUT = 0 V VCC = 0 V, VCC = 5.5 V, VOUT = 4.5 V VIN ≤ 0.2 V, ∆ICC ICCD¶ 0.3 0.3 0.2 0.55 0.2 ±1 ±1 10 –10 –120 –225 –60 –120 ±1 VIN ≥ VCC – 0.2 V VIN ≥ VCC – 0.2 V 0.1 0.5 V V 5 VIN ≤ 0.2 V, VCC = 5.5 V, VIN = 3.4 V§, f1 = 0, Outputs open VCC = 5.25 V, 3.3 0.55 IOL = 64 mA –60 V V 2 IOH = –15 mA IOL = 48 mA VCC = 4.5 V, VCC = 4.75 V, ICC –1.2 UNIT 3.3 VOL Ioff CY74FCT646T TYP† MAX MIN –225 ±1 0.2 0.1 0.2 0.5 2 µA µA µA µA µA mA µA mA 2 mA VCC = 5.25 V, VIN = 3.4 V§, f1 = 0, Outputs open VCC = 5.5 V, One input switching at 50% duty cycle, Outputs open, G = DIR = GND, SAB = SBA = GND, VIN ≤ 0.2 V or VIN ≥ VCC – 0.2 V VCC = 5.25 V, One input switching at 50% duty cycle, Outputs open, G = DIR = GND, SAB = SBA = GND, VIN ≤ 0.2 V or VIN ≥ VCC – 0.2 V 0.06 0.12 mA/ MHz 0.06 0.12 † 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. 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 CY54FCT646T, CY74FCT646T 8-BIT REGISTERED TRANSCEIVERS WITH 3-STATE OUTPUTS SCCS031A – JULY 1994 – REVISED OCTOBER 2001 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) (continued) PARAMETER CY54FCT646T TYP† MAX TEST CONDITIONS VCC = 5.5 5 5 V, V f0 = 10 MHz, Outputs open, open G = DIR = GND, SAB = SBA = GND IC# VCC = 5 5.25 25 V V, f0 = 10 MHz, Outputs open, open G = DIR = GND, SAB = SBA = GND MIN CY74FCT646T TYP† MAX MIN One bit switching at f1 = 5 MHz at 50% duty cycle VIN ≤ 0.2 V or VIN ≥ VCC – 0.2 V 0.7 1.4 VIN = 3.4 V or GND 1.2 3.4 Eight bits switching at f1 = 5 MHz at 50% duty cycle VIN ≤ 0.2 V or VIN ≥ VCC – 0.2 V 2.8 5.6|| VIN = 3.4 V or GND 5.1 14.6|| One bit switching at f1 = 5 MHz at 50% duty cycle VIN ≤ 0.2 V or VIN ≥ VCC – 0.2 V 0.7 1.4 VIN = 3.4 V or GND 1.2 3.4 Eight bits switching at f1 = 5 MHz at 50% duty cycle VIN ≤ 0.2 V or VIN ≥ VCC – 0.2 V 2.8 5.6|| VIN = 3.4 V or GND 5.1 14.6|| UNIT mA mA Ci Co # 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. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 6 10 6 10 pF 8 12 8 12 pF 7 CY54FCT646T, CY74FCT646T 8-BIT REGISTERED TRANSCEIVERS WITH 3-STATE OUTPUTS SCCS031A – JULY 1994 – REVISED OCTOBER 2001 timing requirements over recommended operating free-air temperature range (unless otherwise noted) (see Figure 2) CY54FCT646T MIN tw tsu Pulse duration th Hold time, data after CPAB↑ or CPBA↑ Setup time, data before CPAB↑ or CPBA↑ MAX CY54FCT646AT MIN MAX CY54FCT646CT MIN MAX UNIT 6 5 5 ns 4.5 2 2 ns 2 1.5 1.5 ns timing requirements over recommended operating free-air temperature range (unless otherwise noted) (see Figure 2) CY74FCT646T MIN MAX CY74FCT646AT MIN MAX CY74FCT646CT MIN MAX UNIT tw tsu Pulse duration 6 5 5 ns Setup time, data before CPAB↑ or CPBA↑ 4 2 2 ns th Hold time, data after CPAB↑ or CPBA↑ 2 1.5 1.5 ns switching characteristics over operating free-air temperature range (see Figure 2) PARAMETER FROM (INPUT) TO (OUTPUT) tPLH tPHL A or B B or A tPZH tPZL DIR A or B tPHZ tPLZ G and DIR A or B tPLH tPHL CPAB or CPBA A or B tPLH tPHL SBA or SAB A or B CY54FCT646T CY54FCT646AT CY54FCT646CT MIN MAX MIN MAX MIN MAX 2 11 2 7.7 1.5 6 2 11 2 7.7 1.5 6 2 15 2 10.5 1.5 8.9 2 15 2 10.5 1.5 8.9 2 11 2 7.7 1.5 7.7 2 11 2 7.7 1.5 7.7 2 10 2 7 1.5 6.3 2 10 2 7 1.5 6.3 2 12 2 8.4 1.5 7 2 12 2 8.4 1.5 7 UNIT ns ns ns ns ns switching characteristics over operating free-air temperature range (see Figure 2) 8 PARAMETER FROM (INPUT) TO (OUTPUT) tPLH tPHL A or B B or A tPZH tPZL DIR A or B tPHZ tPLZ G and DIR A or B tPLH tPHL CPAB or CPBA A or B tPLH tPHL SBA or SAB A or B POST OFFICE BOX 655303 CY74FCT646T CY74FCT646AT CY74FCT646CT MIN MAX MIN MAX MIN MAX 1.5 9 1.5 6.3 1.5 5.4 1.5 9 1.5 6.3 1.5 5.4 1.5 14 1.5 9.8 1.5 7.8 1.5 14 1.5 9.8 1.5 7.8 1.5 9 1.5 6.3 1.5 6.3 1.5 9 1.5 6.3 1.5 6.3 1.5 9 1.5 6.3 1.5 5.7 1.5 9 1.5 6.3 1.5 5.7 1.5 11 1.5 7.7 1.5 6.2 1.5 11 1.5 7.7 1.5 6.2 • DALLAS, TEXAS 75265 UNIT ns ns ns ns ns CY54FCT646T, CY74FCT646T 8-BIT REGISTERED TRANSCEIVERS WITH 3-STATE OUTPUTS SCCS031A – JULY 1994 – REVISED 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 VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES INVERTING AND NONINVERTING OUTPUTS 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) 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 2. Load Circuit and Voltage Waveforms POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 9 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. 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