fax id: 7008 444T/2 CY74FCT16244T/2244T CY74FCT16444T/2H244T 16 Bit Buffers/Line Drivers Features * Low power, pin-compatible replacement for ABT functions * 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 -40C to +85C * VCC = 5V 10% CY74FCT16244T Features: * 64 mA sink current, 32 mA source current * Typical VOLP (ground bounce) <1.0V at VCC = 5V, TA = 25C CY74FCT162244T Features: * Balanced output drivers: 24 mA * Reduced system switching noise * Typical VOLP (ground bounce) <0.6V at VCC = 5V, TA= 25C CY74FCT16444T Features: * 64 mA sink current, 32 mA source current * Reduced system loading 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 designed 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 minimal undershoot and reduced ground bounce. The CY74FCT162244T is ideal for driving transmission lines. The CY74FCT16444 is designed for 16-bit operation, reducing control lines from four OE to one OE to reduce input loading. The CY74FCT162H244T is a 24-mA balanced output part that has "bus hold" on the data inputs. The device retains the input's last state whenever the input goes to high impedance. This eliminates the need for pull-up/down resistors and prevents floating inputs. Logic Block Diagrams CY74FCT16244T, CY74FCT162244T, CY74FCT162H244T Pin Configuration SSOP/TSSOP Top View 1 OE 3 OE 1 A1 1 Y1 3 A1 1 A2 1 Y2 3 A2 3 Y2 1 A3 1 Y3 3 A3 3 Y3 3 Y1 1 OE 1 48 2 OE 1 Y1 2 3 47 46 1 A2 1 Y2 GND 1 Y3 1 Y4 VCC 2 Y1 2 Y2 1 A4 3 A4 1 Y4 3 Y4 FCT16244-1 FCT16244-2 2 OE 2 A1 2 A2 2 A3 2 A4 4 OE 4 A1 2 Y1 2 Y2 4 A2 2 Y3 4 A3 4 Y1 4 Y2 4 Y3 4 A4 2 Y4 4 Y4 FCT16244-3 Cypress Semiconductor Corporation * FCT16244-4 3901 North First Street * San Jose 4 1 A1 45 5 16244T 44 162244T 6 162H244T43 GND 1 A3 7 42 8 41 VCC 2 A1 1 A4 2 A2 9 40 GND 10 GND 2 Y3 11 39 38 2 Y4 37 36 2 A4 3 Y1 12 13 3 Y2 14 35 3 A2 GND 15 34 GND 3 Y3 16 33 3 A3 3 Y4 17 32 3 A4 VCC 4 Y1 18 31 19 30 VCC 4 A1 2 A3 3 A1 4 Y2 20 29 4 A2 GND 21 28 GND 4 Y3 22 27 4 A3 4 Y4 23 26 4 A4 4 OE 24 25 3 OE FCT16244-5 * CA 95134 * 408-943-2600 July 1994 - Revised October 30, 1997 CY74FCT16244T/2244T CY74FCT16444T/2H244 Logic Block Diagram CY74FCT16444T Pin Configuration SSOP/TSSOP Top View 1 OE A1 Y1 A2 Y2 A3 Y3 A4 Y4 TO 12 OTHER CHANNELS FCT16244-6 OE Y1 1 48 2 47 NC A1 Y2 3 46 A2 GND 4 45 GND Y3 5 44 A3 Y4 6 43 A4 VCC Y5 7 42 8 41 VCC A5 Y6 16444T 9 40 A6 GND 10 39 GND Y7 11 38 A7 Y8 37 36 A8 Y9 12 13 Y10 14 35 A10 GND 15 34 GND A9 Y11 16 33 A11 Y12 17 32 A12 VCC Y13 18 31 19 30 VCC A13 Y14 20 29 A14 GND 21 28 GND Y15 22 27 A15 Y16 NC 23 26 24 25 A16 NC FCT16244-7 Maximum Ratings [3,4] Pin Description Description (Above which the useful life may be impaired. For user guidelines, not tested.) Three-State Output Enable Inputs (Active LOW) Storage Temperature................................. -55C to +125C Name OE [1] A Data Inputs Y Three-State Outputs Ambient Temperature with Power Applied............................................. -55C to +125C DC Input Voltage ............................................-0.5V to +7.0V DC Output Voltage..........................................-0.5V to +7.0V Function Table [2] DC Output Current (Maximum Sink Current/Pin) ........................ -60 to +120 mA Inputs Outputs OE A Y L L L L H H H X Z Power Dissipation .......................................................... 1.0W Static Discharge Voltage ........................................... >2001V (per MIL-STD-883, Method 3015) Ordering Range Range Industrial Ambient Temperature VCC - 40C to +85C 5V 10% Notes: 1. On CY74FCT162H244T these pins have "bus hold." 2. H = HIGH Voltage Level. L = LOW Voltage Level. X = Don't Care. Z = High Importance. 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-air temperature range. 4. Unused inputs must always be connected to an appropriate logic voltage level, preferably either VCC or ground. 2 CY74FCT16244T/2244T CY74FCT16444T/2H244 Electrical Characteristics Over the Operating Range Parameter Description VIH Input HIGH Voltage VIL Input LOW Voltage Test Conditions Typ.[5] Min. 2.0 [6] Input Hysteresis VIK Input Clamp Diode Voltage IIH Input HIGH Current 100 VCC=Min., IIN=-18 mA Standard -0.7 VCC=Max., VI=VCC Input LOW Current IBBH IBBL Bus Hold Sustain Current on Bus Hold Input[7] Standard VCC=Max., VI=GND Bus Hold VCC=Min. [7] VI=2.0V -50 VI=0.8V +50 IBHHO IBHLO Bus Hold Overdrive Current on Bus Hold Input VCC=Max., VI=1.5V IOZH High Impedance Output Current (Three-State Output pins) IOZL IOS IOFF V mV -1.2 V 1 A 100 Bus Hold IIL Unit V 0.8 VH IO Max. 1 A 100 A A TBD mA VCC=Max., VOUT=2.7V 1 A High Impedance Output Current (Three-State Output pins) VCC=Max., VOUT=0.5V 1 A Short Circuit Current[8] VCC=Max., VOUT=GND -80 -200 mA [8] VCC=Max., VOUT=2.5V -50 -180 mA 1 A Max. Unit Output Drive Current VCC=0V, VOUT4.5V Power-Off Disable -140 [9] Output Drive Characteristics for CY74FCT16244T, CY74FCT16444T Parameter VOH VOL Description Min. Typ.[5] 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 Test Conditions Output HIGH Voltage Output LOW Voltage VCC=Min., IOL=64 mA V 0.2 0.55 V Output Drive Characteristics for CY74FCT162244T, CY74FCT162H244T Parameter IODL Description [8] Output LOW Current [8] Test Conditions Min. Typ.[5] 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 IODH Output HIGH Current VOH Output HIGH Voltage VCC=Min., IOH=-24 mA VOL Output LOW Voltage VCC=Min., IOL=24 mA 0.3 V 0.55 V Notes: 5. Typical values are at VCC=5.0V, TA = +25C ambient. 6. This parameter is guaranteed 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 +25C. 3 CY74FCT16244T/2244T CY74FCT16444T/2H244 Capacitance[6](TA = +25C, f = 1.0 MHz) Parameter Description Test Conditions Typ.[5] Max. Unit CIN Input Capacitance VIN = 0V 4.5 6.0 pF COUT Output Capacitance VOUT = 0V 5.5 8.0 pF Typ.[5] Max. Unit 5 500 A 0.5 1.5 mA Power Supply Characteristics Parameter Description Test Conditions ICC Quiescent Power Supply Current VCC=Max. VIN0.2V, VINVCC-0.2V ICC Quiescent Power Supply Current VCC=Max. (TTL inputs HIGH) VIN=3.4V[10] ICCD Dynamic Power Supply Current[11] VCC=Max., One Input Toggling, VIN=VCC or 50% Duty Cycle, Outputs VIN=GND Open, OE=GND 60 100 A/MHz IC Total Power Supply Current[12] VCC=Max., f1=10 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 0.9 2.3 mA VCC=Max., f1=2.5 MHz, 50% VIN=VCC or Duty Cycle, Outputs Open, Six- VIN=GND teen Bits Toggling, VIN=3.4V or OE=GND VIN=GND 2.4 4.5[13] mA 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 = 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) DH = Duty Cycle for TTL inputs HIGH = 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 f1 = Input signal frequency = Number of inputs changing at f1 N1 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 guaranteed but not tested. 4 CY74FCT16244T/2244T CY74FCT16444T/2H244 Switching Characteristics Over the Operating Range[14] CY74FCT16244T CY74FCT162244T CY74FCT16444T CY74FCT162H244T Parameter Description CY74FCT16244AT CY74FCT162244AT CY74FCT16444AT CY74FCT162H244AT Min. Max. Min. Max. Unit Fig. No.[15] 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 ns -- 0.5 Switching Characteristics Over the Operating Range[14] (continued) CY74FCT16244CT CY74FCT162244CT CY74FCT16444CT CY74FCT162H244CT Parameter Description CY74FCT16244ET CY74FCT162244ET CY74FCT162H244ET Min. Max. Min. Max. Unit Fig. No.[15] 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 ns -- 0.5 Notes: 14. Minimum limits are guaranteed 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 guaranteed by design. 5 CY74FCT16244T/2244T CY74FCT16444T/2H244 Ordering Information CY74FCT16244 Speed (ns) 3.2 4.1 4.8 6.5 Ordering Code Package Name Package Type CY74FCT16244ETPAC Z48 48-Lead (240-Mil) TSSOP CY74FCT16244ETPVC O48 48-Lead (300-Mil) SSOP CY74FCT16244CTPAC Z48 48-Lead (240-Mil) TSSOP CY74FCT16244CTPVC O48 48-Lead (300-Mil) SSOP CY74FCT16244ATPAC Z48 48-Lead (240-Mil) TSSOP CY74FCT16244ATPVC O48 48-Lead (300-Mil) SSOP CY74FCT16244TPAC Z48 48-Lead (240-Mil) TSSOP CY74FCT16244TPVC O48 48-Lead (300-Mil) SSOP Operating Range Industrial Industrial Industrial Industrial Ordering Information CY74FCT162244 Speed (ns) 3.2 4.1 4.8 6.5 Ordering Code Package Name Package Type CY74FCT162244ETPAC Z48 48-Lead (240-Mil) TSSOP CY74FCT162244ETPVC O48 48-Lead (300-Mil) SSOP CY74FCT162244CTPAC Z48 48-Lead (240-Mil) TSSOP CY74FCT162244CTPVC O48 48-Lead (300-Mil) SSOP CY74FCT162244ATPAC Z48 48-Lead (240-Mil) TSSOP CY74FCT162244ATPVC O48 48-Lead (300-Mil) SSOP CY74FCT162244TPAC Z48 48-Lead (240-Mil) TSSOP CY74FCT162244TPVC O48 48-Lead (300-Mil) SSOP Operating Range Industrial Industrial Industrial Industrial Ordering Information CY74FCT16444 Speed (ns) 4.1 4.8 6.5 Ordering Code Package Name Package Type CY74FCT16444CTPAC Z48 48-Lead (240-Mil) TSSOP CY74FCT16444CTPVC O48 48-Lead (300-Mil) SSOP CY74FCT16444ATPAC Z48 48-Lead (240-Mil) TSSOP CY74FCT16444ATPVC O48 48-Lead (300-Mil) SSOP CY74FCT16444TPAC Z48 48-Lead (240-Mil) TSSOP CY74FCT16444TPVC O48 48-Lead (300-Mil) SSOP Operating Range Industrial Industrial Industrial Ordering Information CY74FCT162H244 Speed (ns) 3.2 4.1 4.8 6.5 Ordering Code Package Name Package Type CY74FCT162H244ETPAC Z48 48-Lead (240-Mil) TSSOP CY74FCT162H244ETPVC O48 48-Lead (300-Mil) SSOP CY74FCT162H244CTPAC Z48 48-Lead (240-Mil) TSSOP CY74FCT162H244CTPVC O48 48-Lead (300-Mil) SSOP CY74FCT162H244ATPAC Z48 48-Lead (240-Mil) TSSOP CY74FCT162H244ATPVC O48 48-Lead (300-Mil) SSOP CY74FCT162H244TPAC Z48 48-Lead (240-Mil) TSSOP CY74FCT162H244TPVC O48 48-Lead (300-Mil) SSOP Document #: 38-00396-C 6 Operating Range Industrial Industrial Industrial Industrial CY74FCT16244T/2244T CY74FCT16444T/2H244 Package Diagrams 48-Lead Shrunk Small Outline Package O48 48-Lead Thin Shrunk SmallOutline Package Z48 (c) Cypress Semiconductor Corporation, 1997. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress Semiconductor product. Nor does it convey or imply any license under patent or other rights. Cypress Semiconductor does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges.