74LVX257

74LVX257 LOW VOLTAGE CMOS QUAD 2 CHANNEL MULTIPLEXER (3-STATE) WITH 5V TOLERANT INPUTS s s s s s s s s s s s HIGH SPEED: tPD=5.8ns (TYP.) at VCC = 3.3V 5V TOLERANT INPUTS POWER-DOWN PROTECTION ON INPUTS INPUT VOLTAGE LEVEL: VIL = 0.8V, VIH = 2V at VCC =3V LOW POWER DISSIPATION: ICC = 4 µA (MAX.) at TA=25°C LOW NOISE: VOLP = 0.3V (TYP.) at VCC =3.3V SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 4 mA (MIN) at VCC =3V BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL OPERATING VOLTAGE RANGE: VCC(OPR) = 2V to 3.6V (1.2V Data Retention) PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 257 IMPROVED LATCH-UP IMMUNITY SOP TSSOP Table 1: Order Codes PACKAGE SOP TSSOP T&R 74LVX257MTR 74LVX257TTR DESCRIPTION The 74LVX257 is a low voltage CMOS QUAD 2 CHANNEL MULTIPLEXER (3-STATE) fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. It is ideal for low power, battery operated and low noise 3.3V applications. It is composed of four independent 2-channel multiplexers with common SELECT and ENABLE (OE) INPUT. The 74LVX257 is a non-inverting Figure 1: Pin Connection And IEC Logic Symbols multiplexer. When the ENABLE INPUT is held "High", all outputs become in high impedance state. If SELECT INPUT is held "Low", "A" data is selected, when SELECT INPUT is "High", "B" data is chosen. Power down protection is provided on all inputs 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. It combines high speed performance with the true CMOS low power consumption. All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage. August 2004 Rev. 3 1/13 74LVX257 Figure 2: Input Equivalent Circuit Table 2: Pin Description PIN N° 1 2, 5, 11, 14 3, 6, 10, 13 4, 7, 9, 12 15 8 16 SYMBOL SELECT 1A to 4A 1B to 4B 1Y to 4Y OE GND VCC NAME AND FUNCTION Common Data Select Inputs Data Inputs From Source A Data Inputs From Source B 3 State Multiplexer Outputs 3 State Output Enable Inputs (Active LOW) Ground (0V) Positive Supply Voltage Table 3: Truth Table INPUTS OE H L L L L X :Don‘t Care Z : High Impedance OUTPUT A X L H X X B X X X L H Y Z L H L H SELECT X L L H H Figure 3: Logic Diagram This logic diagram has not be used to estimate propagation delays 2/13 74LVX257 Table 4: Absolute Maximum Ratings Symbol VCC VI VO IIK IOK IO Supply Voltage DC Input Voltage DC Output Voltage DC Input Diode Current DC Output Diode Current DC Output Current Parameter Value -0.5 to +7.0 -0.5 to +7.0 -0.5 to VCC + 0.5 - 20 ± 20 ± 25 ± 50 -65 to +150 300 Unit V V V mA mA mA mA °C °C ICC or IGND DC VCC or Ground Current Storage Temperature Tstg 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 Table 5: Recommended Operating Conditions Symbol VCC VI VO Top dt/dv Supply Voltage (note 1) Input Voltage Output Voltage Operating Temperature Input Rise and Fall Time (note 2) (VCC = 3V) Parameter Value 2 to 3.6 0 to 5.5 0 to VCC -55 to 125 0 to 100 Unit V V V °C ns/V 1) Truth Table guaranteed: 1.2V to 3.6V 2) VIN from 0.8V to 2.0V Table 6: DC Specifications Test Condition Symbol Parameter VCC (V) 2.0 3.0 3.6 2.0 3.0 3.6 2.0 3.0 3.0 VOL Low Level Output Voltage 2.0 3.0 3.0 IOZ High Impedance Output Leakage Current Input Leakage Current Quiescent Supply Current 3.6 3.6 3.6 IO=-50 µA IO=-50 µA IO=-4 mA IO=50 µA IO=50 µA IO=4 mA VI = VIH or VIL VO = VCC or GND VI = 5.5V or GND VI = VCC or GND TA = 25°C Min. 1.5 2.0 2.4 0.5 0.8 0.8 1.9 2.9 2.58 0.0 0.0 0.1 0.1 0.36 ±0.25 ± 0.1 4 2.0 3.0 1.9 2.9 2.48 0.1 0.1 0.44 ± 2.5 ±1 40 Typ. Max. Value -40 to 85°C Min. 1.5 2.0 2.4 0.5 0.8 0.8 1.9 2.9 2.4 0.1 0.1 0.55 ±5 ±1 40 µA µA µA 3/13 V V Max. -55 to 125°C Min. 1.5 2.0 2.4 0.5 0.8 0.8 Max. V Unit VIH High Level Input Voltage Low Level Input Voltage High Level Output Voltage VIL V VOH II ICC 74LVX257 Table 7: Dynamic Switching Characteristics Test Condition Symbol Parameter VCC (V) 3.3 TA = 25°C Min. Typ. 0.3 -0.5 CL = 50 pF 2.0 -0.3 V Max. 0.5 Value -40 to 85°C Min. Max. -55 to 125°C Min. Max. Unit VOLP VOLV VIHD VILD Dynamic Low Voltage Quiet Output (note 1, 2) Dynamic High Voltage Input (note 1, 3) Dynamic Low Voltage Input (note 1, 3) 3.3 3.3 0.8 1) Worst case package. 2) Max number of outputs defined as (n). Data inputs are driven 0V to 3.3V, (n-1) outputs switching and one output at GND. 3) Max number of data inputs (n) switching. (n-1) switching 0V to 3.3V. Inputs under test switching: 3.3V to threshold (VILD), 0V to threshold (VIHD), f=1MHz. Table 8: AC Electrical Characteristics (Input tr = tf = 3ns) Test Condition Symbol Parameter VCC (V) 2.7 2.7 3.3(*) 3.3(*) 2.7 2.7 3.3(*) 3.3(*) 2.7 2.7 3.3(*) tPLZ tPHZ tOSLH tOSHL 3.3(*) 2.7 3.3(*) 2.7 3.3(*) CL (pF) 15 50 15 50 15 50 15 50 15 50 15 50 50 50 50 50 TA = 25°C Min. Typ. 7.0 9.5 5.8 8.3 8.5 10.5 7.0 9.5 8.0 10.5 6.7 9.2 9.5 8.6 0.5 0.5 Max. 13.0 18.0 9.3 12.8 15.4 20.3 11.0 14.5 14.7 19.6 10.5 14.0 16.8 12.0 1.0 1.0 Value -40 to 85°C Min. 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Max. 15.4 20.3 11.0 14.5 18.2 23.1 13.0 16.5 17.5 22.4 12.5 16.0 18.9 13.5 1.5 1.5 -55 to 125°C Min. 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Max. 16.4 21.3 12.0 15.5 20.0 24.5 14.0 18.0 18.5 24.0 13.5 17.0 20.0 15.0 1.5 1.5 ns ns ns ns ns Unit tPLH tPHL Propagation Delay Time A, B, to Y tPLH tPHL Propagation Delay Time SELECT to Y tPZL tPZH Output Enable Time Output Disable Time Output to Output Skew Time (note 1,2) 1) Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs of the same device switching in the same direction, either HIGH or LOW 2) Parameter guaranteed by design (*) Voltage range is 3.3V ± 0.3V 4/13 74LVX257 Table 9: Capacitive Characteristics Test Condition Symbol Parameter VCC (V) 3.3 3.3 3.3 TA = 25°C Min. Typ. 4 6 23 Max. 10 Value -40 to 85°C Min. Max. 10 -55 to 125°C Min. Max. 10 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/4 (per channel) Figure 4: Test Circuit TEST tPLH, tPHL tPZL, tPLZ tPZH, tPHZ CL =15/50pF or equivalent (includes jig and probe capacitance) RL = R1 = 1KΩ or equivalent RT = ZOUT of pulse generator (typically 50Ω) SWITCH Open VCC GND 5/13 74LVX257 Figure 5: Waveform - Propagation Delays For Inverting Conditions (f=1MHz; 50% duty cycle) Figure 6: Waveform - Propagation Delays For Non-inverting Conditions (f=1MHz; 50% duty cycle) 6/13 74LVX257 Figure 7: Waveform - Output Enable And Disable Time (f=1MHz; 50% duty cycle) 7/13 74LVX257 SO-16 MECHANICAL DATA DIM. A a1 a2 b b1 C c1 D E e e3 F G L M S 3.8 4.6 0.5 9.8 5.8 1.27 8.89 4.0 5.3 1.27 0.62 8° (max.) 0.149 0.181 0.019 10 6.2 0.35 0.19 0.5 45° (typ.) 0.385 0.228 0.050 0.350 0.157 0.208 0.050 0.024 0.393 0.244 0.1 mm. MIN. TYP MAX. 1.75 0.25 1.64 0.46 0.25 0.013 0.007 0.019 0.004 MIN. inch TYP. MAX. 0.068 0.010 0.063 0.018 0.010 0016020D 8/13 74LVX257 TSSOP16 MECHANICAL DATA mm. DIM. MIN. A A1 A2 b c D E E1 e K L 0˚ 0.45 0.60 0.05 0.8 0.19 0.09 4.9 6.2 4.3 5 6.4 4.4 0.65 BSC 8˚ 0.75 0˚ 0.018 0.024 1 TYP MAX. 1.2 0.15 1.05 0.30 0.20 5.1 6.6 4.48 0.002 0.031 0.007 0.004 0.193 0.244 0.169 0.197 0.252 0.173 0.0256 BSC 8˚ 0.030 0.004 0.039 MIN. TYP. MAX. 0.047 0.006 0.041 0.012 0.0079 0.201 0.260 0.176 inch A A2 A1 b e K c L E D E1 PIN 1 IDENTIFICATION 1 0080338D 9/13 74LVX257 Tape & Reel SO-16 MECHANICAL DATA mm. DIM. MIN. A C D N T Ao Bo Ko Po P 6.45 10.3 2.1 3.9 7.9 12.8 20.2 60 22.4 6.65 10.5 2.3 4.1 8.1 0.254 0.406 0.082 0.153 0.311 TYP MAX. 330 13.2 0.504 0.795 2.362 0.882 0.262 0.414 0.090 0.161 0.319 MIN. TYP. MAX. 12.992 0.519 inch 10/13 74LVX257 Tape & Reel TSSOP16 MECHANICAL DATA mm. DIM. MIN. A C D N T Ao Bo Ko Po P 6.7 5.3 1.6 3.9 7.9 12.8 20.2 60 22.4 6.9 5.5 1.8 4.1 8.1 0.264 0.209 0.063 0.153 0.311 TYP MAX. 330 13.2 0.504 0.795 2.362 0.882 0.272 0.217 0.071 0.161 0.319 MIN. TYP. MAX. 12.992 0.519 inch 11/13 74LVX257 Table 10: Revision History Date 27-Aug-2004 Revision 3 Description of Changes Ordering Codes Revision - pag. 1. 12/13 74LVX257 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. 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