QS74FCT2X3244 FCT2X3244 AN-001 QSFCT2X244 MDSL-00063-01 2X3244

3.3V CMOS 16-Bit Buffer/Line Driver Q QUALITY SEMICONDUCTOR, INC. QS74FCT2X3244 FEATURES/BENEFITS DESCRIPTION · ·

QS74FCT2X3244 QS74FCT2X3244 3.3V CMOS 16-Bit Buffer/Line Driver Q QUALITY SEMICONDUCTOR, INC. QS74FCT2X3244 QS74FCT2X3244 FEATURES/BENEFITS DESCRIPTION · · · · · · · · · · The FCT2X3244 FCT2X3244 is a 16-bit buffer/line driver with three-state outputs that is ideal for driving highcapacitance loads as in memory address and data buses. All inputs have clamp diodes for undershoot noise suppression and all outputs have ground bounce suppression (see QSI Application Note AN-001 AN-001). Control pins can be driven by 3.3V or 5V components. Ultra-low power QCMOS technology makes this product ideal for portable computing systems or communications devices. Pin and function compatible to the QSFCT2X244 QSFCT2X244 Industrial temperature: 40°C to +85°C Available in 40-pin QVSOP Undershoot clamp diodes on all inputs Ground bounce controlled outputs Low power QCMOS: 0.07µW typ static JEDEC low voltage spec compatible IOL = 24mA Ind. TTL-compatible input and output levels 2.7V to 3.6V supply voltage ny pa om C an ow N Figure 1. Functional Block Diagram 6 OE0 OE1 A0 B0 A4 B4 A8 B8 A12 B12 A1 B1 A5 B5 A9 B9 A13 B13 A2 B2 A6 B6 A10 B10 A14 B14 A3 B3 A7 B7 A11 B11 A15 B15 MDSL-00063-01 MDSL-00063-01 JANUARY 13, 1999 QUALITY SEMICONDUCTOR, INC. 1 QS74FCT2X3244 QS74FCT2X3244 Figure 2. Pin Configuration (All Pins Top View) VCC A0 A1 A2 A3 A4 A5 A6 A7 GND VCC A8 A9 A10 A11 A12 A13 A14 A15 GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 VCC OE0 B0 B1 B2 B3 B4 B5 B6 B7 VCC OE1 B8 B9 B10 B11 B12 B13 B14 B15 an ow N Table 1. Pin Description om C Table 2. Function Table OEn OE Input A Output B Data Bus A Inputs H X Hi-Z Data Bus B Outputs L L L L H H Name I/O Description Ai I/O I/O Bi ny pa OE0 I Output Enables for A/B7-A/B0 OE1 I Output Enables for A/B15-A/B8 Table 3. Absolute Maximum Ratings Supply Voltage to Ground . 0.5V to +4.6V DC Input/Output Voltage . 0.5V to VCC + 0.5V DC Control Pin Voltage VIN . 0.5V +7.0V AC Input Voltage (for a pulse width 20ns) . 3.0V DC Input Diode Current with VIN < 0 . ±20mA DC Output Diode Current with VOUT < 0 . ±50mA DC Output Current Max. Sink Current/Pin . ±60mA Maximum Power Dissipation . 0.5 watts TSTG Storage Temperature . 65° to +150°C 2 QUALITY SEMICONDUCTOR, INC. Note: Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to this device resulting in functional or reliability type failures. MDSL-00063-01 MDSL-00063-01 JANUARY 13, 1999 QS74FCT2X3244 QS74FCT2X3244 Table 4. Capacitance(1) TA = 25°C, f = 1MHz, VIN = 0V, VOUT = 0V Pins(2) Typ Unit 1, 11, 29, 39 4 pF 2-9, 12-19, 21-28, 31-38 8 pF Note: 1. Capacitance is characterized but not tested. 2. Pin Reference is for 40-pin package. Table 5. Recommended Operating Conditions Symbol Description Min Max Unit VCC Supply Voltage 2.7 3.6 V VIN Input Voltage 0 VCC V Output Voltage 0 VCC V 85 °C 8 ns/V VOUT TA Ambient Operating Temperature t/V Input Transition Rise or Fall Rate ny pa 40 0 (1) Note: 1. As measured between 0.8V and 2V. om C Table 6. DC Electrical Characteristics Over Operating Range Recommended operating conditions apply unless otherwise specified. Symbol Parameter VIH VIL ow N an Input HIGH Voltage Test Conditions Min Typ(1) Max Unit Input Pins 2.0 - 5.5 V I/O Pins 2.0 - VCC+0.5 V Input LOW Voltage Input Pins 0.5 - 0.8 Input Hysterisis VTLH VTHL for All Inputs - 0.2 - V | IIH | | IIL | Input Current Input HIGH or LOW VCC = Max., 0 VIN < VCC - - 1 µA | IOZ | Off-State Output Current (Hi-Z) VCC = Max., 0 VIN VCC - - 5 µA IOS Short Circuit Current VCC = Max., VOUT = GND(2,3) 60 - 225 mA VIC Input Clamp Voltage VCC = Min., IIN = 18mA(3) - 0.7 - V VOH Output HIGH Voltage VI = VIH or VIL, VCC = Min., IOH = 100µA VCC0.2 6 V VT V - 2.4 - - Output LOW Voltage VI = VIH or VIL, VCC = Min, IOL = 100µA - - 0.2 V VI = VIH or VIL, VCC = 3V, IOL = 16mA - - 0.4 V VI = VIH or VIL, VCC = 3V, IOL = 24mA VOL - VI = VIH or VIL, VCC = 3V, IOH = 8mA - - 0.5 V Notes: 1. Typical values indicate VCC = 3.3V and TA = 25°C. 2. Not more than one output should be shorted and the duration is 1 second. 3. These parameters are guaranteed by design but not tested. MDSL-00063-01 MDSL-00063-01 JANUARY 13, 1999 QUALITY SEMICONDUCTOR, INC. 3 QS74FCT2X3244 QS74FCT2X3244 Table 7. Power Supply Characteristics Symbol Parameter Test Conditions(1) Min Typ Max Unit ICC Quiescent Power Supply Current VCC = Max., Freq = 0 0V VIN 0.2V or VCC-0.2V VIN VCC - 0.02 40 µA ICC Supply Current per Input @ TTL HIGH VCC = Max., Freq = 0, VIN = VCC 0.6V - 1.0 20 µA QCCD Supply Current per Input per MHz VCC = Max., Outputs Open and Enabled One Bit Toggling @ 50% Duty Cycle Other Inputs at GND or VCC(2,3) - 40 85 µA/ MHz Notes: 1. For conditions shown as Min. or Max., use the appropriate values specified under DC specifications. 2. QCCD is a measurement of device power consumption only and does not include power to drive load capacitance or tester capacitance. This parameter is guaranteed by design but not tested. 3. IC can be computed using the above parameters as explained in the Technical Overview section. ny pa Figure 3. Load Circut for Outputs 6V om C Test 500 Device Output Under Test Open GND CL = 50pF (Includes Jig and Probe Capacitance) tPHL/tPLH Switch Open tPZL/tPLZ 6V tPZH/tPHZ 500 GND an ow N Note: 1. Input pulse charateristics: 0V to 2.7V, tr = tf = 2.5ns (10% to 90%), transition measured at 1.5V, pulse generator ZOUT = 50. Table 8. Switching Characteristics Over Operating Range Industrial: TA = 40°C to 85°C, VCC = 3.3V ±0.3V CLOAD = 50pF, RLOAD = 500 unless otherwise noted. 2X3244 2X3244 Symbol Description Min (1) Max Unit tPLH tPHL Propagation Delay Ai to Bi 1.5 6.5 ns tPZH tPZL Output Enable OE to Bi 1.5 8 ns tPLZ tPHZ Disable Time(2) 1.5 7 ns Notes: 1. Minimums guaranteed but not tested. 2. This parameter is guaranteed by design but not tested. 3. See Test Circuit and Waveforms. 4 QUALITY SEMICONDUCTOR, INC. MDSL-00063-01 MDSL-00063-01 JANUARY 13, 1999