1CY74FCT16444T/2 H244T Data sheet acquired from Cypress Semiconductor Corporation. Data sheet modified to remove devices not offered. CY74FCT16244T CY74FCT162244T CY74FCT162H244T 16-Bit Buffers/Line Drivers SCCS028A - December 1987 - Revised March 2001 Features Functional Description • 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 • VCC = 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 VOLP (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 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 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 1OE 3OE 1A1 3A1 1A2 1Y1 1Y2 3A2 Pin Configuration SSOP/TSSOP Top View 3Y1 3Y2 1OE 1 48 2OE 1Y1 2 47 1A1 1Y2 3 46 1A2 GND 4 45 GND 1Y3 1Y4 1A3 1Y3 3A3 3Y3 VCC 2Y1 2Y2 1A4 1Y4 3A4 FCT16244–1 2A2 2A3 2A4 FCT16244–2 4OE 2OE 2A1 3Y4 2Y1 4A1 2Y2 4A2 2Y3 4A3 2Y4 FCT16244–3 4A4 4Y1 4Y2 4Y3 4Y4 FCT16244–4 Copyright 5 16244T 44 162244T 6 162H244T43 42 7 1A3 8 41 2A1 1A4 VCC 9 40 2A2 GND 10 39 GND 2Y3 11 38 2A3 2Y4 37 36 2A4 3Y1 12 13 3Y2 14 35 3A2 GND 15 34 GND 3Y3 16 33 3A3 3Y4 17 32 3A4 VCC 4Y1 18 31 VCC 19 30 4A1 3A1 4Y2 20 29 4A2 GND 21 28 GND 4Y3 22 27 4A3 4Y4 23 26 4A4 4OE 24 25 3OE FCT16244–5 © 2001, Texas Instruments Incorporated CY74FCT16244T CY74FCT162244T CY74FCT162H244T Maximum Ratings [3,4] Pin Description Name (Above which the useful life may be impaired. For user guidelines, not tested.) Description OE Three-State Output Enable Inputs (Active LOW) Storage Temperature ................................. –55°C to +125°C A Data Inputs[1] Y Three-State Outputs Ambient Temperature with Power Applied............................................. –55°C to +125°C DC Input Voltage ........................................... –0.5V to +7.0V DC Output Voltage......................................... –0.5V to +7.0V [2] DC Output Current (Maximum Sink Current/Pin) ........................–60 to +120 mA Function Table 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 Ambient Temperature VCC – 40°C to +85°C 5V ± 10% Range Industrial 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. Electrical Characteristics Over the Operating Range Parameter Description VIH Input HIGH Voltage VIL Input LOW Voltage VH Input Hysteresis[6] VIK Input Clamp Diode Voltage IIH Input HIGH Current Test Conditions Min. Typ.[5] 2.0 0.8 100 VCC=Min., IIN=–18 mA Standard IIL Input LOW Current IBBH IBBL Bus Hold Sustain Current on Bus Hold Input[7] –0.7 VCC=Max., VI=VCC VCC=Max., VI=GND Bus Hold Bus Hold Overdrive Current on Bus Hold IOZH High Impedance Output Current (Three-State Output pins) IOZL IOS IOFF V mV –1.2 V ±1 µA ±100 Standard IBHHO IBHLO Unit V Bus Hold IO Max. VCC=Min. Input[7] VI=2.0V –50 VI=0.8V +50 ±1 µA ±100 µA µA TBD mA VCC=Max., VOUT=2.7V ±1 µA High Impedance Output Current (Three-State Output pins) VCC=Max., VOUT=0.5V ±1 µA Short Circuit Current[8] VCC=Max., VOUT=GND –80 –200 mA Current[8] VCC=Max., VOUT=2.5V –50 –180 mA ±1 µA Output Drive Power-Off Disable VCC=Max., VI=1.5V VCC=0V, VOUT 2 ≤4.5V[9] –140 CY74FCT16244T CY74FCT162244T CY74FCT162H244T Output Drive Characteristics for CY74FCT16244T 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 V Test Conditions Output HIGH Voltage Output LOW Voltage VCC=Min., IOL=64 mA 0.2 Max. Unit 0.55 V Output Drive Characteristics for CY74FCT162244T, CY74FCT162H244T Parameter IODL Description [8] Output LOW Current Current[8] Test Conditions Min. Typ.[5] Max. Unit VCC=5V, VIN=VIH or VIL, VOUT=1.5V 60 115 150 mA –150 mA IODH Output HIGH VCC=5V, VIN=VIH or VIL, VOUT=1.5V –60 –115 VOH Output HIGH Voltage VCC=Min., IOH=–24 mA 2.4 3.3 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 = +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, IOS tests should be performed last. 9. Tested at +25˚C. 3 CY74FCT16244T CY74FCT162244T CY74FCT162H244T Capacitance[6](TA = +25˚C, 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 µA 0.5 1.5 mA 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 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 µA/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 VIN=VCC or VIN=GND 2.4 4.5[13] mA VIN=3.4V or VIN=GND 6.4 16.5[13] mA VCC=Max., f1=2.5 MHz, 50% Duty Cycle, Outputs Open, Sixteen Bits Toggling, OE=GND 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) = 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. 13. Values for these conditions are examples of the ICC formula. These limits are specified but not tested. 4 CY74FCT16244T CY74FCT162244T CY74FCT162H244T Switching Characteristics Over the Operating Range[14] S CY74FCT16244T CY74FCT162244T Parameter Description CY74FCT16244AT CY74FCT162244AT 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 CY74FCT162H244CT Parameter Description Min. Max. Unit Fig. No.[15] tPLH tPHL Propagation Delay Data to Output 1.5 4.1 ns 1, 3 tPZH tPZL Output Enable Time 1.5 5.8 ns 1, 7, 8 tPHZ tPLZ Output Disable Time 1.5 5.2 ns 1, 7, 8 tSK(O) Output Skew[16] 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. 5 CY74FCT16244T CY74FCT162244T CY74FCT162H244T Ordering Information CY74FCT16244 Speed (ns) 4.1 4.8 6.5 Ordering Code Package Name Package Type CY74FCT16244CTPACT Z48 48-Lead (240-Mil) TSSOP CY74FCT16244CTPVC/PVCT O48 48-Lead (300-Mil) SSOP CY74FCT16244ATPACT Z48 48-Lead (240-Mil) TSSOP CY74FCT16244ATPVC/PVCT O48 48-Lead (300-Mil) SSOP CY74FCT16244TPACT Z48 48-Lead (240-Mil) TSSOP CY74FCT16244TPVC/PVCT O48 48-Lead (300-Mil) SSOP Operating Range Industrial Industrial Industrial Ordering Information CY74FCT162244 Speed (ns) 4.1 4.8 6.5 Ordering Code Package Name Package Type 74FCT162244CTPACT Z48 48-Lead (240-Mil) TSSOP CY74FCT162244CTPVC O48 48-Lead (300-Mil) SSOP 74FCT162244CTPVCT O48 48-Lead (300-Mil) SSOP 74FCT162244ATPACT Z48 48-Lead (240-Mil) TSSOP CY74FCT162244ATPVC O48 48-Lead (300-Mil) SSOP 74FCT162244ATPVCT O48 48-Lead (300-Mil) SSOP CY74FCT162244TPACT Z48 48-Lead (240-Mil) TSSOP CY74FCT162244TPVC/PVCT O48 48-Lead (300-Mil) SSOP Operating Range Industrial Industrial Industrial Ordering Information CY74FCT162H244 Speed (ns) Ordering Code Package Name Package Type Operating Range 4.1 74FCT162H244CTPVC/PVCT O48 48-Lead (300-Mil) SSOP Industrial 4.8 74FCT162H244ATPACT Z48 48-Lead (240-Mil) TSSOP Industrial Document #: 38-00396-C 6 CY74FCT16244T CY74FCT162244T CY74FCT162H244T Package Diagrams 48-Lead Shrunk Small Outline Package O48 48-Lead Thin Shrunk SmallOutline Package Z48 7 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. 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