74ACT16244TTR

74ACT16244 16-BIT BUS BUFFER WITH 3-STATE OUTPUTS (NON INVERTED) s s s s s s s HIGH SPEED: tPD = 4.8ns (TYP.) at VCC = 5V LOW POWER DISSIPATION: ICC = 8µA(MAX.) at TA=25°C COMPATIBLE WITH TTL OUTPUTS VIH = 2V (MIN.), VIL = 0.8V (MAX.) 50Ω TRANSMISSION LINE DRIVING CAPABILITY SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 24mA (MIN) OPERATING VOLTAGE RANGE: VCC (OPR) = 4.5V to 5.5V IMPROVED LATCH-UP IMMUNITY TSSOP ORDER CODES PACKAGE TSSOP TUBE T&R 74ACT16244TTR DESCRIPTION The 74ACT16244 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. G output control governs four BUS BUFFERs. The device is designed to be used with 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The device can be used as four 4-bit buffers, two 8-bit buffers, or one 16-bit buffer.The device is designed to interface directly High Speed CMOS systems with TTL, NMOS and CMOS output voltage levels. All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage. PIN CONNECTION February 2003 1/9 74ACT16244 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No 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 7, 18, 31, 42 SYMBOL 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 GND VCC NAME AND FUNCTION 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 Ground (0V) Positive Supply Voltage IEC LOGIC SYMBOLS TRUTH TABLE INPUTS G L L H X : Don‘t Care Z : High Impedance OUTPUT An L H X Yn L H Z 2/9 74ACT16244 ABSOLUTE MAXIMUM RATINGS Symbol VCC VI VO IIK IOK IO Tstg TL Supply Voltage DC Input Voltage DC Output Voltage DC Input Diode Current DC Output Diode Current DC Output Current Storage Temperature Lead Temperature (10 sec) Parameter Value -0.5 to +7 -0.5 to VCC + 0.5 -0.5 to VCC + 0.5 ± 20 ± 20 ± 50 ± 400 -65 to +150 300 Unit V V V mA mA mA mA °C °C ICC or IGND DC VCC or Ground Current 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 VI VO Top dt/dv Supply Voltage Input Voltage Output Voltage Operating Temperature Input Rise and Fall Time VCC = 4.5 to 5.5V (note 1) Parameter Value 4.5 to 5.5 0 to VCC 0 to VCC -55 to 125 8 Unit V V V °C ns/V 1) VIN from 0.8V to 2.0V 3/9 74ACT16244 DC SPECIFICATIONS Test Condition Symbol Parameter VCC (V) 4.5 5.5 4.5 5.5 4.5 5.5 4.5 5.5 VOL Low Level Output Voltage 4.5 5.5 4.5 5.5 II IOZ Input Leakage Current High Impedance Output Leakege Current Max ICC/Input Quiescent Supply Current Dynamic Output Current (note 1, 2) 5.5 5.5 5.5 5.5 5.5 VO = 0.1 V or VCC-0.1V VO = 0.1 V or VCC-0.1V IO=-50 µA IO=-50 µA IO=-24 mA IO=-24 mA IO=50 µA IO=50 µA IO=24 mA IO=24 mA VI = VCC or GND VI = VIH or VIIL VO = VCC or GND VI = VCC - 2.1V VI = VCC or GND VOLD = 1.65 V max VOHD = 3.85 V min 0.6 8 4.4 5.4 3.86 4.86 0.001 0.001 0.1 0.1 0.36 0.36 ± 0.1 ± 0.5 TA = 25°C Min. 2.0 2.0 Typ. 1.5 1.5 1.5 1.5 4.49 5.49 Max. Value -40 to 85°C Min. 2.0 2.0 0.8 0.8 4.4 5.4 3.76 4.76 0.1 0.1 0.44 0.44 ±1 ±5 1.5 80 75 -75 0.8 0.8 4.4 5.4 3.7 4.7 0.1 0.1 0.5 0.5 ±1 ± 10 1.6 160 50 -50 µA µA mA µA mA mA V Max. -55 to 125°C Min. 2.0 2.0 0.8 0.8 V Max. V Unit VIH VIL VOH High Level Input Voltage Low Level Input Voltage High Level Output Voltage ICCT ICC IOLD IOHD 1) Maximum test duration 2ms, one output loaded at time 2) Incident wave switching is guaranteed on transmission lines with impedances as low as 50Ω AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, RL = 500 Ω, Input tr = tf = 3ns) Test Condition Symbol Parameter VCC (V) 5.0(*) 5.0(*) 5.0(*) TA = 25°C Min. Typ. 3.3 5.0 5.5 4.7 6.6 6.1 Max. 4.8 7.3 8.4 7.0 9.4 8.7 Value -40 to 85°C Min. Max. 9.4 9.5 10.3 8.9 10.3 11.3 -55 to 125°C Min. Max. 10.3 10.1 11.0 10.5 10.9 13.0 ns ns ns Unit tPLH tPHL tPZL tPZH tPLZ tPHZ Propagation Delay Time Output Enable Time Output DisableTime (*) Voltage range is 5.0V ± 0.5V 4/9 74ACT16244 CAPACITIVE CHARACTERISTICS Test Condition Symbol Parameter VCC (V) 5.0 5.0 5.0 fIN = 10MHz TA = 25°C Min. Typ. 3.6 8 45 Max. Value -40 to 85°C Min. Max. -55 to 125°C Min. Max. pF pF pF Unit CIN COUT CPD Input Capacitance Output Capacitance Power Dissipation Capacitance (note 1) 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/n (per circuit) TEST CIRCUIT Test tPLH, tPHL tPZL, tPLZ tPZH, tPHZ CL = 50pF or equivalent (includes jig and probe capacitance) RL = R1 = 500Ω or equivalent RT = ZOUT of pulse generator (typically 50Ω) Switch Open 2VCC GND 5/9 74ACT16244 WAVEFORM 1: PROPAGATION DELAYS (f=1MHz; 50% duty cycle) WAVEFORM 2: OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle) 6/9 74ACT16244 TSSOP48 MECHANICAL DATA mm. DIM. MIN. A A1 A2 b c D E E1 e K L 0˚ 0.50 6.0 0.5 BSC 8˚ 0.75 0˚ 0.020 0.17 0.09 12.4 8.1 BSC 6.2 0.236 0.0197 BSC 8˚ 0.030 0.05 0.9 0.27 0.20 12.6 0.0067 0.0035 0.488 0.318 BSC 0.244 TYP MAX. 1.2 0.15 0.002 0.035 0.011 0.0079 0.496 MIN. TYP. MAX. 0.047 0.006 inch A A2 A1 b e K c L E D E1 PIN 1 IDENTIFICATION 1 7065588C 7/9 74ACT16244 Tape & Reel TSSOP48 MECHANICAL DATA mm. DIM. MIN. A C D N T Ao Bo Ko Po P 8.7 13.1 1.5 3.9 11.9 12.8 20.2 60 30.4 8.9 13.3 1.7 4.1 12.1 0.343 0.516 0.059 0.153 0.468 TYP MAX. 330 13.2 0.504 0.795 2.362 1.197 0.350 0.524 0.067 0.161 0.476 MIN. TYP. MAX. 12.992 0.519 inch 8/9 74ACT16244 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. 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