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74LCX125 LOW VOLTAGE CMOS QUAD BUS BUFFER (3-STATE) WITH 5V TOLERANT INPUTS AND OUTPUTS s s s s s s s s s s 5V TOLERANT INPUTS AND OUTPUTS HIGH SPEED: tPD = 5.2 ns (MAX.) at VCC = 3V POWER DOWN PROTECTION ON INPUTS AND OUTPUTS SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 24mA (MIN) at VCC = 3V PCI BUS LEVELS GUARANTEED AT 24 mA BALANCED PROPAGATION DELAYS: tPLH tPHL OPERATING VOLTAGE RANGE: VCC(OPR) = 2.0V to 3.6V (1.5V Data Retention) PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 125 LATCH-UP PERFORMANCE EXCEEDS 500mA (JESD 17) ESD PERFORMANCE: HBM > 2000V (MIL STD 883 method 3015); MM > 200V SOP TSSOP Table 1: Order Codes PACKAGE SOP TSSOP T&R 74LCX125MTR 74LCX125TTR DESCRIPTION The 74LCX125 is a low voltage CMOS QUAD BUS BUFFER fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. It is ideal for low power and high speed 3.3V applications; it can be interfaced to 5V signal environment for both inputs and outputs. The device requires the 3-STATE control input G to be set high to place the output in to the high impedance state. It has same speed performance at 3.3V than 5V AC/ACT family, combined with a lower 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 September 2004 Rev. 5 1/12 74LCX125 Figure 2: Input And Output Equivalent Circuit Table 2: Pin Description PIN N 1, 4, 10, 13 2, 5, 9, 12 3, 6, 8, 11 7 14 SYMBOL 1G TO 4G 1A TO 4A 1Y TO 4Y GND VCC NAME AND FUNCTION Output Enable Input Data Inputs Data Outputs Ground (0V) Positive Supply Voltage Table 3: Truth Table A X L H X : Don't Care Z : High Impedance G H L L Y Z L H Table 4: Absolute Maximum Ratings Symbol VCC VI VO VO IIK IOK IO ICC IGND Tstg TL Supply Voltage DC Input Voltage DC Output Voltage (OFF State or High Impedance) DC Output Voltage (High or Low State) (note 1) DC Input Diode Current DC Output Diode Current (note 2) DC Output Current DC Supply Current per Supply Pin DC Ground Current per Supply Pin Storage Temperature Lead Temperature (10 sec) Parameter Value -0.5 to +7.0 -0.5 to +7.0 -0.5 to +7.0 -0.5 to VCC + 0.5 - 50 - 50 50 100 100 -65 to +150 300 Unit V V V V mA mA mA mA mA C C Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied 1) IO absolute maximum rating must be observed 2) VO < GND 2/12 74LCX125 Table 5: Recommended Operating Conditions Symbol VCC VI VO VO IOH, IOL IOH, IOL Top dt/dv Supply Voltage (note 1) Input Voltage Output Voltage (OFF State or High Impedance) Output Voltage (High or Low State) High or Low Level Output Current (VCC = 3.0 to 3.6V) High or Low Level Output Current (VCC = 2.7V) Operating Temperature Input Rise and Fall Time (note 2) Parameter Value 2.0 to 3.6 0 to 5.5 0 to 5.5 0 to VCC 24 12 -55 to 125 0 to 10 Unit V V V V mA mA C ns/V 1) Truth Table guaranteed: 1.5V to 3.6V 2) VIN from 0.8V to 2V at VCC = 3.0V Table 6: DC Specifications Test Condition Symbol Parameter VCC (V) -40 to 85 C Min. 2.0 2.7 to 3.6 0.8 2.7 to 3.6 2.7 3.0 VOL Low Level Output Voltage 2.7 to 3.6 2.7 3.0 II Ioff IOZ Input Leakage Current Power Off Leakage Current High Impedance Output Leakage Current Quiescent Supply Current ICC incr. per Input 2.7 to 3.6 0 2.7 to 3.6 IO=-100 A IO=-12 mA IO=-18 mA IO=-24 mA IO=100 A IO=12 mA IO=16 mA IO=24 mA VI = 0 to 5.5V VI or VO = 5.5V VI = VIH or VIL VO = 0 to VCC VI = VCC or GND VI or VO= 3.6 to 5.5V VIH = VCC - 0.6V VCC-0.2 2.2 2.4 2.2 0.2 0.4 0.4 0.55 5 10 5 10 10 500 VCC-0.2 2.2 2.4 2.2 0.2 0.4 0.4 0.55 5 10 5 10 10 500 A A A A A V V 0.8 V Max. Value -55 to 125 C Min. 2.0 Max. V Unit VIH VIL VOH High Level Input Voltage Low Level Input Voltage High Level Output Voltage ICC ICC 2.7 to 3.6 2.7 to 3.6 3/12 74LCX125 Table 7: Dynamic Switching Characteristics Test Condition Symbol Parameter VCC (V) 3.3 CL = 50pF VIL = 0V, VIH = 3.3V Value TA = 25 C Min. Typ. 0.8 -0.8 Max. V Unit VOLP VOLV Dynamic Low Level Quiet Output (note 1) 1) Number of outputs defined as "n". Measured with "n-1" outputs switching from HIGH to LOW or LOW to HIGH. The remaining output is measured in the LOW state. Table 8: AC Electrical Characteristics Test Condition Symbol Parameter VCC (V) 2.7 3.0 to 3.6 2.7 3.0 to 3.6 2.7 3.0 to 3.6 3.0 to 3.6 50 50 500 500 2.5 2.5 CL (pF) 50 50 RL () 500 500 ts = tr (ns) 2.5 2.5 -40 to 85 C Min. 1.0 1.0 1.0 1.0 1.0 Max. 6.0 5.2 6.0 5.0 6.0 5.0 1.0 Value -55 to 125 C Min. 1.0 1.0 1.0 1.0 1.0 Max. 6.9 6.0 6.9 6.0 6.9 6.0 1.0 ns ns ns ns Unit tPLH tPHL tPZL tPZH Propagation Delay Time Output Enable Time to HIGH and LOW level Output Disable Time to HIGH and LOW level Output To Output Skew Time (note1, 2) tPLZ tPHZ tOSLH tOSHL 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 (tOSLH = | tPLHm - tPLHn|, tOSHL = | tPHLm - tPHLn|) 2) Parameter guaranteed by design Table 9: Capacitive Characteristics Test Condition Symbol Parameter VCC (V) 3.3 3.3 3.3 VIN = 0 to VCC VIN = 0 to VCC fIN = 10MHz VIN = 0 or VCC Value TA = 25 C Min. Typ. 5 10 37 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/4 (per gate) 4/12 74LCX125 Figure 3: Test Circuit TEST tPLH, tPHL tPZL, tPLZ tPZH, tPHZ CL = 50 pF or equivalent (includes jig and probe capacitance) RL = R1 = 500 or equivalent RT = ZOUT of pulse generator (typically 50) SWITCH Open 6V GND Figure 4: Waveform - Propagation Delay (f=1MHz; 50% duty cycle) 5/12 74LCX125 Figure 5: Waveform - Output Enable And Disable Time (f=1MHz; 50% duty cycle) 6/12 74LCX125 SO-14 MECHANICAL DATA DIM. A A1 A2 B C D E e H h L k ddd 5.8 0.25 0.4 0 mm. MIN. 1.35 0.1 1.10 0.33 0.19 8.55 3.8 1.27 6.2 0.50 1.27 8 0.100 0.228 0.010 0.016 0 TYP MAX. 1.75 0.25 1.65 0.51 0.25 8.75 4.0 MIN. 0.053 0.004 0.043 0.013 0.007 0.337 0.150 0.050 0.244 0.020 0.050 8 0.004 inch TYP. MAX. 0.069 0.010 0.065 0.020 0.010 0.344 0.157 0016019D 7/12 74LCX125 TSSOP14 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 0.0089 0.201 0.260 0.176 inch A A2 A1 b e K c L E D E1 PIN 1 IDENTIFICATION 1 0080337D 8/12 74LCX125 Tape & Reel SO-14 MECHANICAL DATA mm. DIM. MIN. A C D N T Ao Bo Ko Po P 6.4 9 2.1 3.9 7.9 12.8 20.2 60 22.4 6.6 9.2 2.3 4.1 8.1 0.252 0.354 0.082 0.153 0.311 TYP MAX. 330 13.2 0.504 0.795 2.362 0.882 0.260 0.362 0.090 0.161 0.319 MIN. TYP. MAX. 12.992 0.519 inch 9/12 74LCX125 Tape & Reel TSSOP14 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 10/12 74LCX125 Table 10: Revision History Date 15-Sep-2004 Revision 5 Description of Changes Ordering Codes Revision - pag. 1. 11/12 74LCX125 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 All other names are the property of their respective owners (c) 2004 STMicroelectronics - All Rights Reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com 12/12 |
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