CY74FCT16244T TI | Alldatasheet

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Technical content

Features

  • FCT-E speed at 3.2 ns
  • Power-off disable outputs permits live insertion
  • Edge-rate control circuitry for significantly improved noise characteristics
  • Typical output skew < 250 ps
  • ESD > 2000V
  • TSSOP (19.6-mil pitch) and SSOP (25-mil pitch) packages
  • Industrial temperature range of –40˚C to +85˚C
  • V CC = 5V– 10% CY74FCT16244T Features:
  • 64 mA sink current, 32 mA source current
  • Typical VOLP (ground bounce) <1.0V at VCC = 5V, TA = 25˚C CY74FCT162244T Features:
  • Balanced output drivers: 24 mA
  • Reduced system switching noise
  • Typical V OLP (ground bounce) <0.6V at VCC = 5V, TA = 25˚C CY74FCT162H244T Features:
  • Bus hold on data inputs
  • Eliminates the need for external pull-up or pull-down resistors Functional Description These 16-bit buffers/line drivers are designed for use in memory driver, clock driver, or other bus interface applications, where high-speed and low power are required. With flow-through pinout and small shrink packaging board layout is simplified. The three-state controls are designed to allow 4-bit, 8-bit or combined 16-bit operation. The outputs are de- signed with a power-off disable feature to allow for live insertion of boards. The CY74FCT16244T is ideally suited for driving high-capacitance loads and low-impedance backplanes. The CY74FCT162244T has 24-mA balanced output drivers with current limiting resistors in the outputs. This reduces the need for external terminating resistors and provides for mini- mal undershoot and reduced ground bounce. The CY74FCT162244T is ideal for driving transmission lines. The CY74FCT162H244T is a 24-mA balanced output part that has “bus hold” on the data inputs. The device retains the in- put’s last state whenever the input goes to high impedance. This eliminates the need for pull-up/down resistors and pre- vents floating inputs. GND Logic Block Diagrams CY74FCT16244T, CY74FCT162244T, CY74FCT162H244T Pin Configuration 1OE SSOP/TSSOP Top View 1Y1 1Y2 1Y3 1Y4 1A1 1A2 1A3 1A4 1OE 2Y1 2Y2 2Y3 2Y4 2A1 2A2 2A3 2A4 2OE 1Y1 1Y2 1Y3 1Y4 1A1 1A2 1A3 1A4 2OE GND GND VCC 2Y3 2Y4 2Y1 2Y2 2A1 2A2 2A3 2A4 VCC GND GND 3Y3 3Y4 3Y1 3Y2 3A1 3A2 3A3 3A4 GND GND VCC 4Y3 4Y4 4Y1 4Y2 4A1 4A2 4A3 4A4 VCC GND 4OE 3OE 3Y1 3Y2 3Y3 3Y4 3A1 3A2 3A3 3A4 3OE 4Y1 4Y2 4Y3 4Y4 4A1 4A2 4A3 4A4 4OE FCT16244–1 FCT16244–2 FCT16244–3 FCT16244–4 FCT16244–5 16244T 162244T 162H244T

Maximum Ratings [3,4] (Above which the useful life may be impaired. For user guidelines, not tested.) Ambient Temperature with DC Output Current (per MIL-STD-883, Method 3015) Notes: 1. On CY74FCT162H244T these pins have “bus hold.” 3. Operation beyond the limits set forth may impair the useful life of the device. Unless otherwise noted, these limits are over the operating free-airtemperature range. 4. Unused inputs must always be connected to an appropriate logic voltage level, preferably either V CC or ground. Pin Description Name Description OE Three-State Output Enable Inputs (Active LOW) A Data Inputs[1] Y Three-State Outputs Function Table[2] Inputs Outputs OE A Y L L L L H H Range Ambient Temperature VCC Industrial – 40°C to +85°C 5V – 10% Electrical CharacteristicsOver the Operating Range Parameter Description Test Conditions Min. Typ.[5] Max. Unit VIH Input HIGH Voltage 2.0 V VIL Input LOW Voltage 0.8 V VH Input Hysteresis[6] 100 mV VIK Input Clamp Diode Voltage VCC =Min., IIN=–18 mA –0.7 –1.2 V IIH Input HIGH Current Standard VCC =Max., VI=V CC –1 mA Bus Hold –100 IIL Input LOW Current Standard VCC =Max., VI=GND –1 mA Bus Hold –100 mA IBBH IBBL Bus Hold Sustain Current on Bus Hold Input[7] VCC =Min. VI=2.0V –50 mA VI=0.8V +50 IBHHO IBHLO Bus Hold Overdrive Current on Bus Hold Input[7] VCC =Max., VI=1.5V TBD mA IOZH High Impedance Output Current (Three-State Output pins) VCC =Max., VOUT =2.7V –1 mA IOZL High Impedance Output Current (Three-State Output pins) VCC =Max., VOUT =0.5V –1 mA IOS Short Circuit Current[8] VCC =Max., VOUT =GND –80 –140 –200 mA IO Output Drive Current[8] VCC =Max., VOUT =2.5V –50 –180 mA IOFF Power-Off Disable VCC =0V, VOUT £4.5V[9] –1 mA

Output Drive Characteristics for CY74FCT16244T Parameter Description Test Conditions Min. Typ.[5] Max. Unit VOH Output HIGH Voltage VCC =Min., IOH =–3 mA 2.5 3.5 V VCC =Min., IOH =–15 mA 2.4 3.5 V VCC =Min., IOH =–32 mA 2.0 3.0 V VOL Output LOW Voltage VCC =Min., IOL =64 mA 0.2 0.55 V Output Drive Characteristics for CY74FCT162244T, CY74FCT162H244T Parameter Description Test Conditions Min. Typ.[5] Max. Unit IODL Output LOW Current[8] VCC =5V, VIN=V IH or VIL, VOUT =1.5V 60 115 150 mA IODH Output HIGH Current[8] VCC =5V, VIN=V IH or VIL, VOUT =1.5V –60 –115 –150 mA VOH Output HIGH Voltage VCC =Min., IOH =–24 mA 2.4 3.3 V VOL Output LOW Voltage VCC =Min., IOL =24 mA 0.3 0.55 V Notes: 5. Typical values are at VCC =5.0V, TA = +25˚C ambient. 6. This parameter is specified but not tested. 7. Pins with bus hold are described in Pin Description. 8. 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 in order to minimize internal chip heating and more accurately reflect operational values. Otherwise prolonged shorting of a high output may raise the chip temperature well above normal and thereby cause invalid readings in other parametric tests. In any sequence of parameter tests, I OS tests should be performed last. 9. Tested at +25˚C.

Capacitance[6](TA = +25˚C, f = 1.0 MHz) Parameter Description Test Conditions Typ.[5] Max. Unit C IN Input Capacitance VIN = 0V 4.5 6.0 pF C OUT Output Capacitance VOUT = 0V 5.5 8.0 pF Power Supply Characteristics Parameter Description Test Conditions Typ.[5] Max. Unit ICC Quiescent Power Supply CurrentVCC =Max. VIN£0.2V, VIN£VCC -0.2V 5 500 mA DICC Quiescent Power Supply Current (TTL inputs HIGH) VCC =Max. VIN=3.4V[10] 0.5 1.5 mA ICCD Dynamic Power Supply Current [11] VCC =Max., One Input Toggling, 50% Duty Cycle, Outputs Open, OE=GND VIN=V CC or VIN=GND 60 100 mA/MHz IC Total Power Supply Current[12] VCC =Max., f1=10 MHz, 50% Duty Cycle, Outputs Open, One Bit Toggling, OE=GND VIN=V CC or VIN=GND 0.6 1.5 mA VIN=3.4V or VIN=GND 0.9 2.3 mA VCC =Max., f1=2.5 MHz, 50% Duty Cycle, Outputs Open, Six- teen Bits Toggling, OE=GND VIN=V CC or VIN=GND 2.4 4.5[13] mA VIN=3.4V or VIN=GND 6.4 16.5[13] mA Notes: 10. Per TTL driven input (VIN = 3.4V); all other inputs at VCC or GND. 11. This parameter is not directly testable, but is derived for use in Total Power Supply calculations. 12. IC =IQUIESCENT + IINPUTS + IDYNAMIC IC =I CC +DICC D H N T+ICCD (f0/2 + f1N 1) ICC = Quiescent Current with CMOS input levels ICC = Power Supply Current for a TTL HIGH input (VIN=3.4V) D H = Duty Cycle for TTL inputs HIGH N T = 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 N 1 = Number of inputs changing at f1 All currents are in milliamps and all frequencies are in megahertz. 13. Values for these conditions are examples of the ICC formula. These limits are specified but not tested.

SSwitching CharacteristicsOver the Operating Range[14] Parameter Description CY74FCT16244T CY74FCT162244T CY74FCT16244AT CY74FCT162244AT CY74FCT162H244AT tPLH tPHL Propagation Delay Data to Output 1.5 6.5 1.5 4.8 ns 1, 3 tPZH tPZL Output Enable Time 1.5 8.0 1.5 6.2 ns 1, 7, 8 tPHZ tPLZ Output Disable Time 1.5 7.0 1.5 5.6 ns 1, 7, 8 tSK(O) Output Skew[16] 0.5 0.5 ns — Switching CharacteristicsOver the Operating Range14 Parameter Description CY74FCT16244CT CY74FCT162244CT CY74FCT162H244CT CY74FCT16244ET CY74FCT162244ET CY74FCT162H244ET tPLH tPHL Propagation Delay Data to Output 1.5 4.1 1.5 3.2 ns 1, 3 tPZH tPZL Output Enable Time 1.5 5.8 1.5 4.4 ns 1, 7, 8 tPHZ tPLZ Output Disable Time 1.5 5.2 1.5 3.6 ns 1, 7, 8 tSK(O) Output Skew[16] 0.5 0.5 ns — Notes: 14. Minimum limits are specified but not tested on Propagation Delays. 15. See “Parameter Measurement Information” in the General Information section. 16. Skew between any two outputs of the same package switching in the same direction. This parameter is ensured by design.

Document #: 38-00396-C Speed (ns) Ordering Code Package Name Package Type Operating Range

3.2 CY74FCT16244ETPACT Z48 48-Lead (240-Mil) TSSOP Industrial

CY74FCT16244ETPVC/PVCT O48 48-Lead (300-Mil) SSOP

4.1 CY74FCT16244CTPACT Z48 48-Lead (240-Mil) TSSOP Industrial

CY74FCT16244CTPVC/PVCT O48 48-Lead (300-Mil) SSOP

4.8 CY74FCT16244ATPACT Z48 48-Lead (240-Mil) TSSOP Industrial

CY74FCT16244ATPVC/PVCT O48 48-Lead (300-Mil) SSOP

6.5 CY74FCT16244TPACT Z48 48-Lead (240-Mil) TSSOP Industrial

CY74FCT16244TPVC/PVCT O48 48-Lead (300-Mil) SSOP Speed (ns) Ordering Code Package Name Package Type Operating Range 3.2 74FCT162244ETPACT Z48 48-Lead (240-Mil) TSSOP Industrial CY74FCT162244ETPVC O48 48-Lead (300-Mil) SSOP 74FCT162244ETPVCT O48 48-Lead (300-Mil) SSOP 4.1 74FCT162244CTPACT Z48 48-Lead (240-Mil) TSSOP Industrial CY74FCT162244CTPVC O48 48-Lead (300-Mil) SSOP 74FCT162244CTPVCT O48 48-Lead (300-Mil) SSOP 4.8 74FCT162244ATPACT Z48 48-Lead (240-Mil) TSSOP Industrial CY74FCT162244ATPVC O48 48-Lead (300-Mil) SSOP 74FCT162244ATPVCT O48 48-Lead (300-Mil) SSOP

6.5 CY74FCT162244TPACT Z48 48-Lead (240-Mil) TSSOP Industrial

CY74FCT162244TPVC/PVCT O48 48-Lead (300-Mil) SSOP Speed (ns) Ordering Code Package Name Package Type Operating Range 3.2 74FCT162H244ETPACT Z48 48-Lead (240-Mil) TSSOP Industrial 74FCT162H244ETPVC/PVCT O48 48-Lead (300-Mil) SSOP 4.1 74FCT162H244CTPVC/PVCT O48 48-Lead (300-Mil) SSOP Industrial 4.8 74FCT162H244ATPACT Z48 48-Lead (240-Mil) TSSOP Industrial

48-Lead Shrunk Small Outline PackageO48 48-Lead Thin Shrunk SmallOutline PackageZ48

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