74V2T126STR

74V2T126 DUAL BUS BUFFER (3-STATE) ■ ■ ■ ■ ■ ■ ■ ■ HIGH SPEED: tPD = 3.8ns (TYP.) at VCC = 5V LOW POWER DISSIPATION: ICC = 1µA(MAX.) at TA = 25°C COMPATIBLE WITH TTL OUTPUTS: VIH = 2V (MIN), VIL = 0.8V (MAX) POWER DOWN PROTECTION ON INPUTS AND OUTPUTS SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 8mA (MIN) BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL OPERATING VOLTAGE RANGE: VCC(OPR) = 4.5V to 5.5V IMPROVED LATCH-UP IMMUNITY DESCRIPTION The 74V2T126 is an advanced high-speed CMOS DUAL BUS BUFFER fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. 3-STATE control input nG has to be set LOW to place the output into the high impedance state. SOT23-8L ORDER CODES PACKAGE T&R SOT23-8L 74V2T126STR Power down protection is provided on all inputs and outputs and 0 to 7V can be accepted on inputs with no regard to the supply voltage. This device can be used to interface 3V to 5V systems and it is ideal for portable applications like personal digital assistant, camcorder and all battery-powered equipment. All inputs and outputs are equipped with protection circuits against static discharge, giving them ESD immunity and transient excess voltage. PIN CONNECTION AND IEC LOGIC SYMBOLS June 2003 1/8 74V2T126 INPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No SYMBOL 1, 7 2, 5 3, 6 4 1G, 2G 1A, 2A 2Y, 1Y GND VCC 8 NAME AND FUNCTION Output Enable Inputs Data Inputs Data Outputs Ground (0V) Positive Supply Voltage TRUTH TABLE nA nG nY X L H L H H Z L H X: "H" or "L" Z: High Impedance ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit Supply Voltage -0.5 to +7.0 V VI DC Input Voltage -0.5 to +7.0 V VO DC Output Voltage -0.5 to VCC + 0.5 V IIK DC Input Diode Current − 20 mA IOK DC Output Diode Current − 20 mA IO DC Output Current ± 25 mA ± 50 mA -65 to +150 °C 260 °C VCC 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 Supply Voltage Unit 4.5 to 5.5 V VI Input Voltage 0 to 5.5 V VO Output Voltage 0 to VCC V Top Operating Temperature -55 to 125 °C 0 to 20 ns/V dt/dv Input Rise and Fall Time (note 1) (VCC = 5.0 ± 0.5V) 1) VIN from 0.8V to 2V 2/8 Value 74V2T126 DC SPECIFICATION Test Condition Symbol VIH VIL VOH VOL IOZ II IOPD ICC +ICC Parameter 4.5 to 5.5 4.5 to 5.5 Low Level Output Voltage High Impedance Output Leakage Current Input Leakage Current Power down Output Leakage Current Quiescent Supply Current Additional Worst Case Supply Current TA = 25°C VCC (V) High Level Input Voltage Low Level Input Voltage High Level Output Voltage Value Min. Typ. Max. 2.0 -40 to 85°C -55 to 125°C Min. Min. 2.0 0.8 4.5 IO=-50 µA 4.4 4.5 IO=-8 mA 3.94 4.5 IO=50 µA 4.5 Max. 4.5 0.0 Max. 2.0 0.8 V 0.8 4.4 4.4 3.8 3.7 Unit V V 0.1 0.1 0.1 IO=8 mA 0.36 0.44 0.55 5.5 VI = VIH or VIL VO = 5.5 or GND ±0.25 ± 2.5 ±5 µA 0 to 5.5 VI = 5.5V or GND ± 0.1 ±1 ±1 µA 0 VO = 5.5 0.5 5 10 µA 5.5 VI = VCC or GND 1 10 20 µA One Input at 3.4V, other input at VCC or GND 1.35 1.5 1.5 mA 5.5 V AC ELECTRICAL CHARACTERISTICS (Input tr = tf = 3ns) Test Condition Symbol Parameter VCC (V) CL (pF) tPLH tPHL Propagation Delay Time 5.0(*) 5.0(*) tPLZ tPHZ Output Disable Time 5.0(*) 15 5.0(*) tPZL tPZH Output Enable Time Value TA = 25°C Min. -40 to 85°C -55 to 125°C Typ. Max. Min. Max. Min. Max. 15 3.8 5.5 1.0 6.5 1.0 7.5 50 4.3 6.5 1.0 7.5 1.0 8.5 RL = 1 KΩ 3.6 5.0 1.0 6.0 1.0 7.0 50 RL = 1 KΩ 5.1 7.0 1.0 8.0 1.0 9.0 5.0(*) 15 RL = 1 KΩ 3.7 5.9 1.0 7.0 1.0 8.0 5.0(*) 50 RL = 1 KΩ 4.1 6.5 1.0 7.5 1.0 8.5 Unit ns (*) Voltage range is 5.0V ± 0.5V 3/8 74V2T126 CAPACITIVE CHARACTERISTICS Test Condition Symbol Value TA = 25°C Parameter Min. CIN Input Capacitance COUT Output Capacitance Power Dissipation Capacitance (note 1) CPD Typ. Max. 4 10 -40 to 85°C -55 to 125°C Min. Min. Max. Unit Max. 10 10 pF 6 pF 14 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 current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/2 TEST CIRCUIT TEST CIRCUIT TEST SWITCH tPLH, tPHL Open tPZL, tPLZ tPZH, tPHZ VCC CL =15/50pF or equivalent (includes jig and probe capacitance) R1 = 1KΩ or equivalent RT = ZOUT of pulse generator (typically 50Ω) 4/8 GND 74V2T126 WAVEFORM 1 : PROPAGATION DELAYS (f=1MHz; 50% duty cycle) WAVEFORM 2: OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle) 5/8 74V2T126 SOT23-8L MECHANICAL DATA mm. mils DIM. MIN. MAX. MIN. TYP. MAX. A 0.90 1.45 35.4 57.1 A1 0.00 0.15 0.0 5.9 A2 0.90 1.30 35.4 51.2 b 0.22 0.38 8.6 14.9 C 0.09 0.20 3.5 7.8 D 2.80 3.00 110.2 118.1 E 2.60 3.00 102.3 118.1 E1 1.50 1.75 59.0 68.8 e 0 e1 L 6/8 TYP 0.35 .65 25.6 1.95 76.7 0.55 13.7 21.6 74V2T126 Tape & Reel SOT23-xL MECHANICAL DATA mm. inch DIM. MIN. TYP A MAX. MIN. TYP. 180 13.0 7.086 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 MAX. 0.504 0.512 14.4 0.519 0.567 Ao 3.13 3.23 3.33 0.123 0.127 0.131 Bo 3.07 3.17 3.27 0.120 0.124 0.128 Ko 1.27 1.37 1.47 0.050 0.054 0.0.58 Po 3.9 4.0 4.1 0.153 0.157 0.161 P 3.9 4.0 4.1 0.153 0.157 0.161 7/8 74V2T126 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. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. © The ST logo is a registered trademark of STMicroelectronics © 2003 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - United States. © http://www.st.com 8/8