CY74FCT16374T TI | Alldatasheet

Document overview

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Technical content

Features

  • FCT-E speed at 3.7 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 CC = 5V– 10% CY74FCT16374T Features:
  • 64 mA sink current, 32 mA source current
  • Typical VOLP (ground bounce) <1.0V at VCC = 5V, TA = 25˚C CY74FCT162374T Features:
  • Balanced 24 mA output drivers
  • Reduced system switching noise
  • Typical V OLP (ground bounce) <0.6V at VCC = 5V, TA = 25˚C Functional Description CY74FCT16374T and CY74FCT162374T are 16-bit D-type registers designed for use as buffered registers in high-speed, low power bus applications. These devices can be used as two independent 8-bit registers or as a single 16-bit register by connecting the output Enable (OE) and Clock (CLK) inputs. Flow-through pinout and small shrink packaging aid in simplifying board layout. The output buffers are designed with power-off disable feature that allows live insertion of boards. The CY74FCT16374T is ideally suited for driving high-capacitance loads and low-impedance backplanes. The CY74FCT162374T has 24-mA balanced output drivers with current limiting resistors in the outputs. This reduces the need for external terminating resistors and provides for minimal undershoot and reduced ground bounce. The CY74FCT162374T is ideal for driving transmission lines. Logic Block Diagrams Pin Configuration D C 1OE FCT162374-1 1CLK 1D 1 1O 1 TO 7 OTHER CHANNELS D C 2OE FCT162374-2 2CLK 2D 1 2O 1 FCT162374-3 GND 1OE SSOP/TSSOP Top View 1O 1 1O 2 1O 3 1O 4 1D 1 1D 2 1D 3 1D 4 1CLK GND GND VCC 1O 7 1O 8 1O 5 1O 6 1D 5 1D 6 1D 7 1D 8 VCC GND GND 2O 3 2O 4 2O 1 2O 2 2D 1 2D 2 2D 3 2D 4 GND GND VCC 2O 7 2O 8 2O 5 2O 6 2D 5 2D 6 2D 7 2D 8 VCC GND 2OE 2CLK TO 7 OTHER CHANNELS

Maximum Ratings [2, 3] (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) Function Table[1] Inputs Outputs FunctionD CLK OE O X L H Z High-Z X H H Z L L L Load RegisterH L H L H Z H H Z Pin Description Name Description D Data Inputs CLK Clock Inputs OE Three-State Output Enable Inputs (Active LOW) O Three-State Outputs Operating Range Range Ambient Temperature VCC Industrial -40°C to +85°C 5V – 10% Electrical CharacteristicsOver the Operating Range Parameter Description Test Conditions Min. Typ.[4] Max. Unit VIH Input HIGH Voltage 2.0 V VIL Input LOW Voltage 0.8 V VH Input Hysteresis[5] 100 mV VIK Input Clamp Diode Voltage VCC =Min., IIN=-18 mA -0.7 -1.2 V IIH Input HIGH Current VCC =Max., VI=V CC –1 mA IIL Input LOW Current VCC =Max., VI=GND –1 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[6] VCC =Max., VOUT =GND -80 -140 -200 mA IO Output Drive Current[6] VCC =Max., VOUT =2.5V -50 -180 mA IOFF Power-Off Disable VCC =0V, VOUT £4.5V[7] –1 mA Output Drive Characteristics for CY74FCT16374T Parameter Description Test Conditions Min. Typ.[4] 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 Notes: 2. 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. 3. Unused inputs must always be connected to an appropriate logic voltage level, preferably either VCC or ground. 4. Typical values are at VCC = 5.0V, TA= +25˚C ambient. 5. This parameter is specified but not tested. 6. 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. 7. Tested at +25˚C.

Output Drive Characteristics for CY74FCT162374T Parameter Description Test Conditions Min. Typ.[4] Max. Unit IODL Output LOW Current[6] VCC =5V, VIN=V IH or VIL, VOUT =1.5V 60 115 150 mA IODH Output HIGH Current[6] 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 Capacitance[5](TA = +25˚C, f = 1.0 MHz) Parameter Description Test Conditions Typ.[4] 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.[4] 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[8] 0.5 1.5 mA ICCD Dynamic Power Supply Current [9] 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[10] VCC =Max., f0=10 MHz, f1=5 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 1.1 3.0 mA VCC =Max., f0=10 MHz, f1=2.5 MHz, 50% Duty Cycle, Outputs Open, Sixteen Bits Toggling, OE=GND VIN=V CC or VIN=GND 3.0 5.5[11] mA VIN=3.4V or VIN=GND 7.5 19.0[11] mA Note: 8. Per TTL driven input (VIN=3.4V); all other inputs at VCC or GND. 9. This parameter is not directly testable, but is derived for use in Total Power Supply calculations. 10. IC =I QUIESCENT + IINPUTS + IDYNAMIC IC =I CC +DICC D H N T+ICCD (f0/2 + f1N 1) ICC = Quiescent Current with CMOS input levels DICC = 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. 11. Values for these conditions are examples of the ICC formula. These limits are specified but not tested.

Switching CharacteristicsOver the Operating Range[12] CY74FCT16374T CY74FCT162374T CY74FCT16374AT CY74FCT162374AT Fig. tPLH tPHL Propagation Delay CLK to O 2.0 10.0 2.0 6.5 ns 1, 5 tPZH tPZL Output Enable Time 1.5 12.5 1.5 6.5 ns 1, 7, 8 tPHZ tPLZ Output Disable Time 1.5 8.0 1.5 5.5 ns 1, 7, 8 tSU Set-Up Time HIGH or LOW, D to CLK 2.0 2.0 ns 4 tH Hold Time HIGH or LOW, D to CLK 1.5 1.5 ns 4 tW CLK Pulse Width HIGH or LOW 5.0 5.0 ns 5 tSK(O) Output Skew[14] 0.5 0.5 ns CY74FCT16374CT CY74FCT162374CT CY74FCT16374ET CY74FCT162374ET Fig. tPLH tPHL Propagation Delay CLK to O 2.0 5.2 2.0 3.7 ns 1, 5 tPZH tPZL Output Enable Time 1.5 5.5 1.5 4.4 ns 1, 7, 8 tPHZ tPLZ Output Disable Time 1.5 5.0 1.5 3.6 ns 1, 7, 8 tSU Set-Up Time HIGH or LOW, D to CLK 2.0 1.5 ns 4 tH Hold Time HIGH or LOW, D to CLK 1.5 0.0 ns 4 tW CLK Pulse Width HIGH or LOW 3.3 3.0 ns 5 tSK(O) Output Skew[14] 0.5 0.5 ns Notes: 12. Minimum limits are specified but not tested on Propagation Delays. 13. See “Parameter Measurement Information” in the General Information section. 14. Skew between any two outputs of the same package switching in the same direction. This parameter is ensured by design.

(ns) Ordering Code Package Name Package Type Operating Range

3.7 CY74FCT16374ETPACT Z48 48-Lead (240-Mil) TSSOP Industrial

CY74FCT16374ETPVC/PVCT O48 48-Lead (300-Mil) SSOP

5.2 CY74FCT16374CTPACT Z48 48-Lead (240-Mil) TSSOP Industrial

CY74FCT16374CTPVC/PVCT O48 48-Lead (300-Mil) SSOP

6.5 CY74FCT16374ATPACT Z48 48-Lead (240-Mil) TSSOP Industrial

CY74FCT16374ATPVC/PVCT O48 48-Lead (300-Mil) SSOP

10.0 CY74FCT16374TPVC/PVCT O48 48-Lead (300-Mil) SSOP Industrial

(ns) Ordering Code Package Name Package Type Operating Range 3.7 74FCT162374ETPACT Z48 48-Lead (240-Mil) TSSOP Industrial CY74FCT162374ETPVC O48 48-Lead (300-Mil) SSOP 74FCT162374ETPVCT O48 48-Lead (300-Mil) SSOP 5.2 74FCT162374CTPACT Z48 48-Lead (240-Mil) TSSOP Industrial CY74FCT162374CTPVC O48 48-Lead (300-Mil) SSOP 74FCT162374CTPVCT O48 48-Lead (300-Mil) SSOP 6.5 74FCT162374ATPACT Z48 48-Lead (240-Mil) TSSOP Industrial CY74FCT162374ATPVC O48 48-Lead (300-Mil) SSOP 74FCT162374ATPVCT O48 48-Lead (300-Mil) SSOP

10.0 CY74FCT162374TPVC/PVCT O48 48-Lead (300-Mil) SSOP Industrial

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

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