CY74FCT2257CTSOC

CY74FCT2257T QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS SCCS038B – SEPTEMBER 1994 – REVISED OCTOBER 2001 D D D D D D D D D Q OR SO PACKAGE (TOP VIEW) Function and Pinout Compatible With FCT and F Logic 25-Ω Output Series Resistors to Reduce Transmission-Line Reflection Noise TTL Output Level Versions of Equivalent FCT Functions Edge-Rate Control Circuitry for Significantly Improved Noise Characteristics Ioff Supports Partial-Power-Down Mode Operation 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) 12-mA Output Sink Current 15-mA Output Source Current 3-State Outputs S I0a I1a Ya I0b I1b Yb GND 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 VCC OE I0c I1c Yc I0d I1d Yd description The CY74FCT2257T has four identical two-input multiplexers that select four bits of data from two sources under the control of a common data-select (S) input. The I0 inputs are selected when S is low, and the I1 inputs are selected when S is high. Data appears at the output in noninverted form for the CY74FCT2257T. On-chip termination resistors at the outputs reduce system noise caused by reflections. The CY74FCT2257T can replace the FCT257T to reduce noise in an existing design. The CY74FCT2257T is a logic implementation of a four-pole, two-position switch, in which the position of the switch is determined by the logic levels supplied to S. Outputs are forced to the high-impedance off state when the output-enable (OE) input is high. All but one device must be in the high-impedance state to prevent currents from exceeding the maximum ratings if outputs are tied together. Design of the OE signals must ensure that there is no overlap when outputs of 3-state devices are tied together. 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. PIN DESCRIPTION NAME DESCRIPTION I Data inputs S Common data-select input OE Y Output-enable input (active low) Data outputs 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 CY74FCT2257T QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS SCCS038B – SEPTEMBER 1994 – REVISED OCTOBER 2001 ORDERING INFORMATION SPEED (ns) ORDERABLE PART NUMBER Tape and reel 4.3 CY74FCT2257CTQCT Tube 4.3 CY74FCT2257CTSOC Tape and reel 4.3 CY74FCT2257CTSOCT PACKAGE† TA QSOP – Q –40°C 40°C to 85°C SOIC – SO TOP-SIDE MARKING FR257-3 FCT2257C QSOP – Q Tape and reel 5 CY74FCT2257ATQCT FR257-1 † Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. FUNCTION TABLE INPUTS OE S I1 X OUTPUT Y H X I0 X L H X L L L H X H H L L L X L L L H X H Z H = High logic level, L = Low logic level, X = Don’t care, Z = High-impedance (off) state logic diagram (positive logic) OE S I0a I1a I0b I1b I0c I1c I0d I1d 2 15 1 2 4 Ya 3 5 7 Yb 6 14 12 Yc 13 11 9 10 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 Yd CY74FCT2257T QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS SCCS038B – SEPTEMBER 1994 – REVISED 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90°C/W SO package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57°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. NOTES: 1. The package thermal impedance is calculated in accordance with JESD 51-7. recommended operating conditions (see Note 2) MIN NOM MAX UNIT 4.75 5 5.25 V VCC VIH Supply voltage VIL IOH Low-level input voltage 0.8 V High-level output current –15 mA IOL TA Low-level output current 12 mA 85 °C High-level input voltage 2 Operating free-air temperature –40 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 3 CY74FCT2257T QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS SCCS038B – SEPTEMBER 1994 – REVISED 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 IIH All inputs IIL IOZH IOZL IOS‡ MIN 2.4 20 TYP† MAX UNIT –0.7 –1.2 V 3.3 V 0.3 0.55 V 25 40 Ω 0.2 V VCC = 5.25 V, VCC = 5.25 V, VIN = 2.7 V VIN = 0.5 V ±1 µA ±1 µA VCC = 5.25 V, VCC = 5.25 V, VOUT = 2.7 V VOUT = 0.5 V 10 µA –10 µA VCC = 5.25 V, VCC = 0 V, VOUT = 0 V VOUT = 4.5 V –225 mA –60 –120 ±1 µA 0.1 0.2 mA 0.5 2 mA 0.06 0.12 mA/ MHz 0.7 1.4 1 2.4 0.7 1.4|| 1.7 5.4|| Ci 5 10 Co 9 12 Ioff ICC ∆ICC ICCD¶ IC# 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 VCC = 5.25 V, One input switching at 50% duty cycle, Outputs open, OE = GND, VIN ≤ 0.2 V or VIN ≥ VCC – 0.2 V VCC = 5.25 V, Outputs open, open OE = GND VIN ≤ 0.2 V or VIN ≥ VCC – 0.2 V One bit switching at f1 = 10 MHz at 50% duty cycle Four bits switching at f1 = 2.5 MHz at 50% duty cycle VIN = 3.4 V or GND VIN ≤ 0.2 V or VIN ≥ VCC – 0.2 V VIN = 3.4 V or GND 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 CY74FCT2257T QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS SCCS038B – SEPTEMBER 1994 – REVISED OCTOBER 2001 switching characteristics over operating free-air temperature range (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) tPLH tPHL Ia or Ib Y tPLH tPHL S Y tPZH tPZL OE Y OE Y tPHZ tPLZ POST OFFICE BOX 655303 CY74FCT2257AT • DALLAS, TEXAS 75265 CY74FCT2257CT MIN MAX MIN MAX 1.5 5 1.5 4.7 1.5 5 1.5 4.7 1.5 7 1.5 5.2 1.5 7 1.5 5.2 1.5 7 1.5 6 1.5 7 1.5 6 1.5 5.5 1.5 5 1.5 5.5 1.5 5 UNIT ns ns ns ns 5 CY74FCT2257T QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS SCCS038B – SEPTEMBER 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 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 PACKAGE OPTION ADDENDUM www.ti.com 10-Dec-2020 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) (4/5) (6) CY74FCT2257ATQCT ACTIVE SSOP DBQ 16 2500 RoHS & Green NIPDAU Level-2-260C-1 YEAR -40 to 85 FR257-1 (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