74V2T241 DUAL BUS BUFFER NON INVERTED (3-STATE) ■ ■ ■ ■ ■ ■ ■ ■ HIGH SPEED: tPD = 3.8ns (TYP.) at VCC = 5V LOW POWER DISSIPATION: ICC = 1µA(MAX.) at TA = 25°C POWER DOWN PROTECTION ON INPUTS AND OUTPUTS COMPATIBLE WITH TTL LEVEL: VIH=2.0V(MIN), VIL=0.8V(MAX) SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 8mA (MIN) at VCC = 4.5V BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL OPERATING VOLTAGE RANGE: VCC(OPR) = 4.5V to 5.5V IMPROVED LATCH-UP IMMUNITY DESCRIPTION The 74V2T241 is an advanced high-speed CMOS DUAL BUS BUFFER NON INVERTER fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. It has one active-high and one active-low output enable. Power down protection is provided on all SOT23-8L ORDER CODES PACKAGE T&R SOT23-8L 74V2T241STR 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 5V to 3V 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 74V2T241 INPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN N° 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 1G 2G A Y L L H H H L L H X L H Z X: "H" or "L" Z: High Impedance ABSOLUTE MAXIMUM RATINGS Symbol VCC 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 (see note 1) -0.5 to +7.0 V VO DC Output Voltage (see note 2) -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 ICC or IGND DC VCC or Ground Current Tstg Storage Temperature TL Lead Temperature (10 sec) ± 25 mA ± 50 mA -65 to +150 °C 260 °C Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied. 1) VCC=0V or nG=VCC(Output in High Impedance state) 2) High or Low State 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 (see note 1) 0 to 5.5 V VO Output Voltage (see note 2) Top Operating Temperature dt/dv Input Rise and Fall Time (note 3) 1) VCC=0V or Output in High Impedance state 2) High or Low State 3) VIN from 0.8 to 2.0V 2/8 Value (VCC = 5.0 ± 0.5V) 0 to VCC V -55 to 125 °C 0 to 20 ns/V 74V2T241 DC SPECIFICATIONS Test Condition Symbol VIH Parameter 4.5 to 5.5 4.5 to 5.5 VOL Low Level Output Voltage IOZ High Impedance Output Leakage Current Input Leakage Current Power down Output Leakage Current Quiescent Supply Current VIL VOH II IOPD ICC TA = 25°C VCC (V) High Level Input Voltage Low Level Input Voltage High Level Output Voltage Value Min. Typ. Max. 0.8 -40 to 85°C -55 to 125°C Min. Min. 0.8 2.0 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. 0.8 2.0 V 2.0 4.4 4.4 3.8 3.7 Unit V V 0.1 0.1 0.1 V IO=8 mA 0.36 0.44 0.44 5.5 VI = VIH or VIL VO = 5.5 or GND ±0.25 ± 2.5 ± 2.5 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 10 µA AC ELECTRICAL CHARACTERISTICS (Input tr = tf = 3ns) Test Condition Symbol Parameter VCC (V) tPLH tPHL Propagation Delay Time 5.0(**) tPLZ tPHZ Output Disable Time tPZL tPZH Output Enable Time Value TA = 25°C CL (pF) Min. 15 -40 to 85°C -55 to 125°C Typ. Max. Min. Max. Min. Max. 3.8 5.5 1.0 6.5 1.0 7.5 5.0 (**) 50 4.3 6.5 1.0 7.5 1.0 8.5 5.0 (**) 15 RL = 1 KΩ 3.6 5.0 1.0 6.0 1.0 7.0 5.0(**) 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 50 RL = 1 KΩ 4.1 6.5 1.0 7.5 1.0 8.5 5.0 (**) Unit ns ns ns (**) Voltage range is 5.0V ± 0.5V CAPACITIVE CHARACTERISTICS Test Condition Symbol Parameter Value TA = 25°C 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. 10 Unit Max. 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 3/8 74V2T241 TEST CIRCUIT TEST CIRCUIT TEST SWITCH tPLH, tPHL Open tPZL, tPLZ VCC tPZH, tPHZ GND CL =15/50pF or equivalent (includes jig and probe capacitance) R1 = 1KΩ or equivalent RT = ZOUT of pulse generator (typically 50Ω) WAVEFORM 1 : PROPAGATION DELAYS (f=1MHz; 50% duty cycle) 4/8 74V2T241 WAVEFORM 2: OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle) 5/8 74V2T241 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 74V2T241 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 74V2T241 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