1CY74FCT162374T Data sheet acquired from Cypress Semiconductor Corporation. Data sheet modified to remove devices not offered. CY74FCT16374T CY74FCT162374T 16-Bit Registers SCCS055C - August 1994 - Revised September 2001 Features Functional Description • Ioff supports partial-power-down mode operation • 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 • VCC = 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 VOLP (ground bounce) <0.6V at VCC = 5V, TA= 25˚C 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. 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. 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 SSOP/TSSOP Top View 1OE 1 48 1CLK 1O1 2 3 47 46 1 D1 GND 1O3 4 5 45 44 GND 1 D3 1O4 6 43 1 D4 VCC 1O5 7 42 8 9 41 VCC 1 D5 1O2 1OE 2OE 1CLK 1D1 2CLK D 1O1 2 D1 D 2O1 C C 1O6 GND 1O7 1O8 2O1 TO 7 OTHER CHANNELS FCT162374-1 2O2 TO 7 OTHER CHANNELS FCT162374-2 GND 2O3 10 11 12 13 40 39 38 14 15 37 36 35 34 1 D2 1 D6 GND 1 D7 1 D8 2 D1 2 D2 GND 2 D3 16 33 2O4 17 32 2 D4 VCC 2O5 18 31 19 30 VCC 2 D5 2O6 20 29 2 D6 GND 2O7 21 28 22 27 GND 2 D7 2O8 23 26 2 D8 2OE 24 25 2CLK FCT162374-3 Copyright © 2001, Texas Instruments Incorporated CY74FCT16374T CY74FCT162374T Maximum Ratings[2, 3] Function Table[1] Inputs Outputs D CLK OE O Function X L H Z High-Z X H H Z L L L H L H L H Z H H Z (Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature .............................. −55°C to +125°C Ambient Temperature with Power Applied .......................................... −55°C to +125°C Load Register DC Input Voltage................................................. −0.5V to +7.0V DC Output Voltage.............................................. −0.5V to +7.0V DC Output Current (Maximum Sink Current/Pin)............................−60 to +120 mA Power Dissipation ..........................................................1.0W Pin Description Name Static Discharge Voltage............................................>2001V (per MIL-STD-883, Method 3015) Description D Data Inputs CLK Clock Inputs OE Three-State Output Enable Inputs (Active LOW) O Three-State Outputs Operating Range Range Industrial Ambient Temperature VCC −40°C to +85°C 5V ± 10% Electrical Characteristics Over the Operating Range Parameter Description Test Conditions Min. Typ.[4] Max. Input HIGH Voltage VIL Input LOW Voltage VH Input Hysteresis[5] VIK Input Clamp Diode Voltage VCC=Min., IIN=−18 mA −1.2 V IIH Input HIGH Current VCC=Max., VI=VCC ±1 µA IIL Input LOW Current VCC=Max., VI=GND ±1 µA IOZH High Impedance Output Current (Three-State Output pins) VCC=Max., VOUT=2.7V ±1 µA IOZL High Impedance Output Current (Three-State Output pins) VCC=Max., VOUT=0.5V ±1 µA IOS Short Circuit Current[6] VCC=Max., VOUT=GND −80 −200 mA [6] VCC=Max., VOUT=2.5V −50 −180 mA ±1 µA Max. Unit IO IOFF 2.0 Unit VIH V 0.8 100 Output Drive Current Power-Off Disable VCC=0V, VOUT −0.7 −140 ≤4.5V[7] V mV Output Drive Characteristics for CY74FCT16374T Parameter VOH VOL Description Output HIGH Voltage Output LOW Voltage Min. Typ.[4] 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 Test Conditions VCC=Min., IOL=64 mA 0.2 0.55 V Notes: 1. H = HIGH Voltage Level. L = LOW Voltage Level. X = Don’t Care. Z = HIGH Impedance. = LOW-to-HIGH Transition. 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-air temperature 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, IOS tests should be performed last. 7. Tested at +25˚C. 2 CY74FCT16374T CY74FCT162374T Output Drive Characteristics for CY74FCT162374T Parameter IODL Min. Typ.[4] Max. Unit VCC=5V, VIN=VIH or VIL, VOUT=1.5V 60 115 150 mA VCC=5V, VIN=VIH or VIL, VOUT=1.5V −60 −115 −150 mA 2.4 3.3 Description Output LOW Current [6] [6] Test Conditions IODH Output HIGH Current VOH Output HIGH Voltage VCC=Min., IOH=−24 mA VOL Output LOW Voltage VCC=Min., IOL=24 mA V 0.3 0.55 V Typ.[4] Max. Unit Capacitance[5] (TA = +25˚C, f = 1.0 MHz) Parameter Description Test Conditions CIN Input Capacitance VIN = 0V 4.5 6.0 pF COUT Output Capacitance VOUT = 0V 5.5 8.0 pF Typ.[4] Max. Unit 5 500 µA Power Supply Characteristics Parameter Description Test Conditions ICC Quiescent Power Supply Current VCC=Max. VIN≤0.2V, VIN≥VCC−0.2V ∆ICC 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=VCC or VIN=GND 60 100 µA/ 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=VCC or VIN=GND 0.6 1.5 mA VIN=3.4V or VIN=GND 1.1 3.0 mA VIN=VCC or VIN=GND 3.0 5.5[11] mA VIN=3.4V or VIN=GND 7.5 19.0[11] mA VCC=Max., f0=10 MHz, f1=2.5 MHz, 50% Duty Cycle, Outputs Open, Sixteen Bits Toggling, OE=GND 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. = IQUIESCENT + IINPUTS + IDYNAMIC 10. IC IC = ICC+∆ICCDHNT+ICCD(f0/2 + f1N1) ICC = Quiescent Current with CMOS input levels ∆ICC = Power Supply Current for a TTL HIGH input (VIN=3.4V) = Duty Cycle for TTL inputs HIGH DH = Number of TTL inputs at DH NT ICCD = Dynamic Current caused by an input transition pair (HLH or LHL) = Clock frequency for registered devices, otherwise zero f0 = Input signal frequency f1 = Number of inputs changing at f1 N1 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. 3 CY74FCT16374T CY74FCT162374T Switching Characteristics Over the Operating Range[12] CY74FCT16374T CY74FCT162374T Parameter Description CY74FCT16374AT CY74FCT162374AT Min. Max. Min. Max. Unit Fig. No.[13] 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 Parameter Description Min. Max. Unit Fig. No.[13] tPLH tPHL Propagation Delay CLK to O 2.0 5.2 ns 1, 5 tPZH tPZL Output Enable Time 1.5 5.5 ns 1, 7, 8 tPHZ tPLZ Output Disable Time 1.5 5.0 ns 1, 7, 8 tSU Set-Up Time HIGH or LOW, D to CLK 2.0 ns 4 tH Hold Time HIGH or LOW, D to CLK 1.5 ns 4 tW CLK Pulse Width HIGH or LOW 3.3 ns 5 tSK(O) Output Skew[14] 0.5 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. 4 ns CY74FCT16374T CY74FCT162374T Ordering Information CY74FCT16374T Speed (ns) 5.2 6.5 10.0 Ordering Code Package Name Package Type CY74FCT16374CTPACT Z48 48-Lead (240-Mil) TSSOP CY74FCT16374CTPVC/PVCT O48 48-Lead (300-Mil) SSOP CY74FCT16374ATPACT Z48 48-Lead (240-Mil) TSSOP CY74FCT16374ATPVC/PVCT O48 48-Lead (300-Mil) SSOP CY74FCT16374TPVC/PVCT O48 48-Lead (300-Mil) SSOP Operating Range Industrial Industrial Industrial Ordering Information CY74FCT162374T Speed (ns) 5.2 6.5 10.0 Ordering Code Package Name Package Type 74FCT162374CTPACT Z48 48-Lead (240-Mil) TSSOP CY74FCT162374CTPVC O48 48-Lead (300-Mil) SSOP 74FCT162374CTPVCT O48 48-Lead (300-Mil) SSOP 74FCT162374ATPACT Z48 48-Lead (240-Mil) TSSOP CY74FCT162374ATPVC O48 48-Lead (300-Mil) SSOP 74FCT162374ATPVCT O48 48-Lead (300-Mil) SSOP CY74FCT162374TPVC/PVCT O48 48-Lead (300-Mil) SSOP 5 Operating Range Industrial Industrial Industrial CY74FCT16374T CY74FCT162374T Package Diagrams 48-Lead Shrunk Small Outline Package O48 48-Lead Thin Shrunk Small Outline Package Z48 6 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. 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