74AC16244TTR

74AC16244 16-BIT BUS BUFFER WITH 3-STATE OUTPUTS (NON INVERTED) ■ ■ ■ ■ ■ ■ ■ ■ ■ HIGH SPEED: tPD = 4.5 ns (TYP.) at VCC = 5V LOW POWER DISSIPATION: ICC = 8 µA (MAX.) at TA=25°C HIGH NOISE IMMUNITY: VNIH = VNIL = 28% VCC (MIN.) POWER DOWN PROTECTION ON INPUTS SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 24 mA (MIN) BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL OPERATING VOLTAGE RANGE: VCC(OPR) = 2V to 6V PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 16244 IMPROVED LATCH-UP IMMUNITY DESCRIPTION The 74AC16244 is an advanced high-speed CMOS 16-BIT BUS BUFFER (3-STATE) fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS tecnology. Any nG output control governs four BUS BUFFERS. Output Enable inputs (nG) tied together give full 16 bit operation. When nG is LOW, the outputs are enabled. When nG is HIGH, the output are in high impedance state. The device is designed to be used with 3-state memory address drivers, etc. ) s ( ct TSSOP ORDER CODES PACKAGE TUBE c u d TSSOP PIN CONNECTION e t le ) s t( T&R 74AC16244TTR o r P o s b O - u d o r P e t e l o s b O February 2003 1/9 74AC16244 INPUT AND OUTPUT EQUIVALENT CIRCUIT IEC LOGIC SYMBOLS PIN DESCRIPTION PIN No SYMBOL NAME AND FUNCTION 1 2, 3, 5, 6 8, 9, 11, 12 13, 14, 16, 17 19, 20, 22, 23 24 25 30, 29, 27, 26 36, 35, 33, 32 41, 40, 38, 37 47, 46, 44, 43 48 4, 10, 15, 21, 28, 34, 39, 45 1G 1Y1 to 1Y4 2Y1 to 2Y4 3Y1 to 3Y4 4Y1 to 4Y4 4G 3G 4A1 to 4A4 3A1 to 3A4 2A1 to 2A4 1A1 to 1A4 2G 7, 18, 31, 42 VCC Output Enable Input Data Outputs Data Outputs Data Outputs Data Outputs Output Enable Input Output Enable Input Data Outputs Data Outputs Data Outputs Data Outputs Output Enable Input GND u d o Positive Supply Voltage G r P e An Yn L L H L H X L H Z TRUTH TABLE INPUTS t e l o s b O X : Don’t Care Z : High Impedance 2/9 ) s ( ct Ground (0V) OUTPUT c u d o s b O - e t le o r P ) s t( 74AC16244 ABSOLUTE MAXIMUM RATINGS Symbol VCC Parameter Supply Voltage VI DC Input Voltage VO DC Output Voltage IIK Value Unit -0.5 to +7.0 V -0.5 to +7.0 V -0.5 to VCC + 0.5 V DC Input Diode Current ± 20 mA IOK DC Output Diode Current ± 50 mA IO DC Output Current ± 50 mA ± 400 mA -65 to +150 °C 300 °C ICC or IGND DC VCC or Ground Current Tstg Storage Temperature TL Lead Temperature (10 sec) Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied RECOMMENDED OPERATING CONDITIONS Symbol VCC Parameter Value Supply Voltage Unit uc 2 to 6 VI Input Voltage 0 to VCC VO Output Voltage 0 to VCC Top Operating Temperature dt/dv Pr e t le 1) VIN from 30% to 70% of VCC ) s ( ct V V od °C 0 to 8 ns/V -55 to 125 Input Rise and Fall Time (note 1) VCC = 3.0, 4.5 or 5.5 ) s t( V o s b O - u d o r P e t e l o s b O 3/9 74AC16244 DC SPECIFICATIONS Test Condition Symbol VIH Parameter 3.0 4.5 5.5 3.0 4.5 5.5 Low Level Input Voltage VOH High Level Output Voltage Low Level Output Voltage VOL Input Leakage Current High Impedance Output Leakage Current Quiescent Supply Current II IOZ ICC TA = 25 °C VCC (V) High Level Input Voltage VIL Value VO = 0.1 V or VCC-0.1V Min. Typ. 2.1 3.15 3.85 1.5 2.25 2.75 1.5 2.25 2.75 VO = 0.1 V or VCC-0.1V Max. -40 to 85°C -55 to 125°C Min. Min. Max. 2.1 3.15 3.85 0.9 1.35 1.65 0.9 1.35 1.65 IO=-50 µA 2.9 2.99 2.9 2.9 IO=-50 µA 4.4 4.49 4.4 4.4 5.49 5.5 IO=-50 µA 5.4 5.4 5.4 3.0 IO=-12 mA 2.56 2.46 2.46 4.5 IO=-24 mA 3.86 3.76 3.76 5.5 IO=-24 mA 4.86 4.76 4.76 IO=50 µA 0.002 0.1 IO=50 µA 0.001 0.1 5.5 IO=50 µA 0.001 3.0 IO=12 mA 4.5 IO=24 mA 5.5 VI = VCC or GND 5.5 VI = VIH or VIL VO = VCC or GND 5.5 VI = VCC or GND ) s ( ct uc 0.1 V V ) s t( 0.1 od 0.1 0.1 0.44 0.44 0.44 0.44 ± 0.1 ±1 ±1 µA ± 0.5 ±5 ±5 µA 8 80 80 µA 0.1 0.1 0.36 e t le 0.36 o s b O - V 0.9 1.35 1.65 3.0 3.0 Max. 2.1 3.15 3.85 4.5 4.5 Unit Pr 0.1 V AC ELECTRICAL CHARACTERISTICS ( C L = 50 pF, RL = 500 Ω, Input tr = tf = 3n) u d o Test Condition Symbol r P e Parameter t e l o VCC (V) 4/9 Min. Min. 6 8.5 11.5 11.5 (**) 4.5 7.0 9.0 9.0 3.3(*) 8 10.5 14.0 14.0 5.0(**) 5.5 8.0 10.0 10.0 3.3(*) 7.3 9.0 11.5 11.5 (**) 5.5 8.0 14.0 14.0 tPLZ tPHZ Output Disable Time (*) Voltage range is 3.3V ± 0.3V (**) Voltage range is 5.0V ± 0.5V -55 to 125°C Max. 3.3 5.0 Min. -40 to 85°C Typ. 5.0 O TA = 25°C (*) tPLH tPHL Propagation Delay Time A to Y tPZL tPZH Output Enable Time bs CL (pF) Value Max. Unit Max. ns ns ns 74AC16244 CAPACITIVE CHARACTERISTICS Test Condition Symbol Parameter TA = 25°C VCC (V) CIN Input Capacitance COUT Output Capacitance Power Dissipation Capacitance (note 1) CPD Value Min. fIN = 10MHz 5.0 Typ. Max. 7 10 -40 to 85°C -55 to 125°C Min. Min. Max. Unit Max. 10 10 pF 14 pF 25 pF 1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/ 16(per Latch) TEST CIRCUIT c u d e t le ) s ( ct TEST u d o tPLH, tPHL tPZL, tPLZ tPZH, tPHZ r P e ) s t( o r P o s b O - SWITCH Open VCC GND CL = 50 pF or equivalent (includes jig and probe capacitance) RL = R1 = 500Ω or equivalent RT = ZOUT of pulse generator (typically 50Ω) t e l o s b O 5/9 74AC16244 WAVEFORM 1: PROPAGATION DELAYS (f=1MHz; 50% duty cycle) c u d WAVEFORM 2: OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle) e t le ) s ( ct u d o r P e t e l o s b O 6/9 o s b O - o r P ) s t( 74AC16244 TSSOP48 MECHANICAL DATA mm. inch DIM. MIN. TYP MAX. A MIN. TYP. MAX. 1.2 A1 0.05 0.047 0.15 A2 0.002 0.006 0.9 0.035 b 0.17 0.27 0.0067 0.011 c 0.09 0.20 0.0035 0.0079 D 12.4 12.6 0.488 ) s t( E 0.496 8.1 BSC E1 6.0 0.318 BSC 6.2 e 0.5 BSC 0˚ 8˚ L 0.50 0.75 ) s ( ct A2 A1 b o r P e du e o r P 0.244 0.0197 BSC K A c u d 0.236 e t le 0˚ o s b O - 0.020 K 8˚ 0.030 L E c D t e l o s b O E1 PIN 1 IDENTIFICATION 1 7065588C 7/9 74AC16244 Tape & Reel TSSOP48 MECHANICAL DATA mm. inch DIM. MIN. TYP A MAX. MIN. TYP. 330 13.2 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 0.504 0.519 30.4 1.197 Ao 8.7 8.9 0.343 0.350 Bo 13.1 13.3 0.516 Ko 1.5 1.7 0.059 Po 3.9 4.1 0.153 ) s t( P 11.9 12.1 0.468 0.524 ) s ( ct u d o r P e t e l o s b O o s b O - c u d ro P e let 8/9 MAX. 0.067 0.161 0.476 74AC16244 c u d e t le ) s ( ct ) s t( o r P o s b O - u d o r P e t e l o s b O Information furnished is believed to be accurate and reliable. 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