74LVX126 LOW VOLTAGE CMOS QUAD BUS BUFFERS (3-STATE) WITH 5V TOLERANT INPUTS ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ HIGH SPEED: tPD=4.4ns (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 = 2 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 126 IMPROVED LATCH-UP IMMUNITY DESCRIPTION The 74LVX126 is a low voltage CMOS QUAD BUS BUFFERs 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. SOP TSSOP Table 1: Order Codes PACKAGE T&R SOP TSSOP 74LVX126MTR 74LVX126TTR This device requires the 3-STATE control input G to be set low to place the output go in to the high impedance state. 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. Figure 1: Pin Connection And IEC Logic Symbols August 2004 Rev. 2 1/12 74LVX126 Figure 2: Input Equivalent Circuit Table 2: Pin Description PIN N° SYMBOL 1, 4, 10, 13 2, 5, 9, 12 3, 6, 8, 11 7 1G to 4G 1A to 4A 1Y to 4Y GND VCC 14 NAME AND FUNCTION Output Enable Inputs Data Inputs Data Outputs Ground (0V) Positive Supply Voltage Table 3: Truth Table A G Y X L H L H H Z L H X :Don‘t Care Z : High Impedance Table 4: Absolute Maximum Ratings Symbol VCC Parameter Supply Voltage VI DC Input Voltage VO DC Output Voltage IIK DC Input Diode Current IOK DC Output Diode Current IO DC Output Current ICC or IGND DC VCC or Ground Current Storage Temperature Tstg TL Lead Temperature (10 sec) Value Unit -0.5 to +7.0 V -0.5 to +7.0 V -0.5 to VCC + 0.5 - 20 V mA ± 20 mA ± 25 mA ± 50 mA -65 to +150 °C 300 °C 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 Value Unit Supply Voltage (note 1) 2 to 3.6 V VI Input Voltage 0 to 5.5 V VO Output Voltage Top Operating Temperature VCC dt/dv Parameter Input Rise and Fall Time (note 2) (VCC = 3V) 1) Truth Table guaranteed: 1.2V to 3.6V 2) VIN from 0.8V to 2.0V 2/12 0 to VCC V -55 to 125 °C 0 to 100 ns/V 74LVX126 Table 6: DC Specifications Test Condition Symbol VIH VIL VOH VOL IOZ II ICC Parameter High Level Input Voltage Low Level Input Voltage High Level Output Voltage Low Level Output Voltage High Impedance Output Leakage Current Input Leakage Current Quiescent Supply Current Value TA = 25°C VCC (V) Min. 2.0 3.0 3.6 2.0 3.0 3.6 Typ. Max. 1.5 2 2.4 -40 to 85°C -55 to 125°C Min. Min. Max. 1.5 2 2.4 0.5 0.8 0.8 Max. 1.5 2 2.4 0.5 0.8 0.8 Unit V 0.5 0.8 0.8 V 2.0 IO=-50 µA 1.9 2.0 3.0 IO=-50 µA 2.9 3.0 3.0 IO=-4 mA 2.58 2.0 IO=50 µA 0.0 0.1 0.1 0.1 3.0 IO=50 µA 0.0 0.1 0.1 0.1 3.0 IO=4 mA 0.36 0.44 0.55 3.6 VI = VIH or VIL VO = VCC or GND ±0.25 ± 2.5 ±5 µA 3.6 VI = 5.5V or GND ± 0.1 ±1 ±1 µA 3.6 VI = VCC or GND 2 20 20 µA 1.9 1.9 2.9 2.9 2.48 2.4 V V Table 7: Dynamic Switching Characteristics Test Condition Symbol VOLP VOLV VIHD VILD Parameter Dynamic Low Voltage Quiet Output (note 1, 2) Dynamic High Voltage Input (note 1, 3) Dynamic Low Voltage Input (note 1, 3) TA = 25°C VCC (V) Min. 3.3 3.3 3.3 Value -0.5 CL = 50 pF Typ. Max. 0.3 0.5 -40 to 85°C -55 to 125°C Min. Min. Max. Unit Max. -0.3 V 2.0 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. 3/12 74LVX126 Table 8: AC Electrical Characteristics (Input tr = tf = 3ns) Test Condition Symbol tPLH tPHL tPZL tPZH Parameter Propagation Delay Time Output Enable Time tPLZ tPHZ Output Disable Time tOSLH tOSHL Output to Output Skew Time (note 1,2) Value TA = 25°C -40 to 85°C -55 to 125°C Max. Min. Max. Min. 5.8 8.0 1.0 9.6 1.0 11.5 7.0 10.5 1.0 12.6 1.0 15.0 15 4.4 6.2 1.0 8.5 1.0 9.5 3.3(*) 50 5.9 9.7 1.0 12.0 1.0 13.5 2.7 15 8.9 11.5 1.0 12.5 1.0 12.5 VCC (V) CL (pF) 2.7 15 2.7 50 3.3(*) Min. Typ. Unit Max. 2.7 50 10.0 14.0 1.0 16.0 1.0 16.0 3.3(*) 15 8.0 10.4 1.0 11.5 1.0 11.5 3.3(*) 50 8.9 12 1.0 13.0 1.0 13.0 2.7 50 7.2 11.0 1.0 13.0 1.0 15.6 3.3(*) 2.7 50 6.0 8.5 1.0 11.0 1.0 13.0 50 0.5 1.0 1.5 1.5 3.3(*) 50 0.5 1.0 1.5 1.5 ns ns ns ns 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 Table 9: Capacitive Characteristics Test Condition Symbol Parameter CIN Input Capacitance COUT Output Capacitance Power Dissipation Capacitance (note 1) CPD VCC (V) Value TA = 25°C Min. -40 to 85°C -55 to 125°C Min. Min. Max. Unit Typ. Max. 3.3 4 10 3.3 6 pF 3.3 14 pF 10 Max. 10 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/4 (per circuit) 4/12 74LVX126 Figure 3: Test Circuit TEST SWITCH tPLH, tPHL Open tPZL, tPLZ VCC tPZH, tPHZ GND CL =15/50pF or equivalent (includes jig and probe capacitance) RL = R1 = 1KΩ or equivalent RT = ZOUT of pulse generator (typically 50Ω) Figure 4: Waveform - Propagation Delays (f=1MHz; 50% duty cycle) 5/12 74LVX126 Figure 5: Waveform - Output Enable And Disable Time (f=1MHz; 50% duty cycle) 6/12 74LVX126 SO-14 MECHANICAL DATA DIM. mm. MIN. TYP inch MAX. MIN. TYP. MAX. A 1.35 1.75 0.053 0.069 A1 0.1 0.25 0.004 0.010 A2 1.10 1.65 0.043 0.065 B 0.33 0.51 0.013 0.020 C 0.19 0.25 0.007 0.010 D 8.55 8.75 0.337 0.344 E 3.8 4.0 0.150 0.157 e 1.27 0.050 H 5.8 6.2 0.228 0.244 h 0.25 0.50 0.010 0.020 L 0.4 1.27 0.016 0.050 k 0° 8° 0° 8° ddd 0.100 0.004 0016019D 7/12 74LVX126 TSSOP14 MECHANICAL DATA mm. inch DIM. MIN. TYP A MAX. MIN. TYP. MAX. 1.2 A1 0.05 A2 0.8 b 0.047 0.15 0.002 0.004 0.006 1.05 0.031 0.039 0.041 0.19 0.30 0.007 0.012 c 0.09 0.20 0.004 0.0089 D 4.9 5 5.1 0.193 0.197 0.201 E 6.2 6.4 6.6 0.244 0.252 0.260 E1 4.3 4.4 4.48 0.169 0.173 0.176 1 e 0.65 BSC K 0˚ L 0.45 A 0.60 0.0256 BSC 8˚ 0˚ 0.75 0.018 8˚ 0.024 0.030 A2 A1 b e K c L E D E1 PIN 1 IDENTIFICATION 1 0080337D 8/12 74LVX126 Tape & Reel SO-14 MECHANICAL DATA mm. inch DIM. MIN. A TYP MAX. MIN. 330 MAX. 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 TYP. 0.504 22.4 0.519 0.882 Ao 6.4 6.6 0.252 0.260 Bo 9 9.2 0.354 0.362 Ko 2.1 2.3 0.082 0.090 Po 3.9 4.1 0.153 0.161 P 7.9 8.1 0.311 0.319 9/12 74LVX126 Tape & Reel TSSOP14 MECHANICAL DATA mm. inch DIM. MIN. A MAX. MIN. 330 13.2 TYP. MAX. 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 10/12 TYP 0.504 22.4 0.519 0.882 Ao 6.7 6.9 0.264 0.272 Bo 5.3 5.5 0.209 0.217 Ko 1.6 1.8 0.063 0.071 Po 3.9 4.1 0.153 0.161 P 7.9 8.1 0.311 0.319 74LVX126 Table 10: Revision History Date Revision 27-Aug-2004 2 Description of Changes Ordering Codes Revision - pag. 1. 11/12 74LVX126 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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