74LVC125A LOW VOLTAGE CMOS QUAD BUS BUFFERS (3-STATE) HIGH PERFORMANCE ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ 5V TOLERANT INPUTS HIGH SPEED: tPD = 4.8ns (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) = 1.65V to 3.6V (1.2V 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 DESCRIPTION The 74LVC125A 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 1.65 to 3.6 VCC operations and low power and low noise applications. SOP TSSOP Table 1: Order Codes PACKAGE T&R SOP TSSOP 74LVC125AMTR 74LVC125ATTR It can be interfaced to 5V signal environment for inputs in mixed 3.3/5V system. These devices require the same 3-STATE control input G to be taken high to make the output go in to the high impedance state. It has more 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 July 2004 Rev. 8 1/12 74LVC125A Figure 2: Input And Output Equivalent Circuit Table 2: Pin Description PIN N° SYMBOL 1, 4, 9, 12 2, 5, 10, 13 3, 6, 8, 11 7 G1 to G4 A1 to A4 Y1 to Y4 GND VCC 14 Table 3: Truth Table NAME AND FUNCTION Output Enable Inputs Data Inputs Data Outputs Ground (0V) Positive Supply Voltage A G Y X L H H L L Z L H X : Don’t care Z : High Impedance Table 4: 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 (High Impedance or VCC = 0V) -0.5 to +7.0 V VO DC Output Voltage (High or Low State) (note 1) -0.5 to VCC + 0.5 V IIK DC Input Diode Current - 50 mA IOK DC Output Diode Current (note 2) - 50 mA IO DC Output Current ICC or IGND DC VCC or Ground Current per Supply Pin Tstg Storage Temperature TL Lead Temperature (10 sec) ± 50 mA ± 100 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 1) IO absolute maximum rating must be observed 2) VO < GND 2/12 74LVC125A Table 5: Recommended Operating Conditions Symbol VCC Parameter Supply Voltage (note 1) Value Unit 1.65 to 3.6 V VI Input Voltage 0 to 5.5 V VO Output Voltage (High Impedance or VCC = 0V) 0 to 5.5 V VO Output Voltage (High or Low State) 0 to VCC V IOH, IOL High or Low Level Output Current (VCC = 3.0 to 3.6V) ± 24 mA IOH, IOL High or Low Level Output Current (VCC = 2.7 to 3.0V) ± 12 mA IOH, IOL High or Low Level Output Current (VCC = 2.3 to 2.7V) ±8 mA IOH, IOL High or Low Level Output Current (VCC = 1.65 to 2.3V) Top dt/dv Operating Temperature Input Rise and Fall Time (note 2) ±4 mA -55 to 125 °C 0 to 10 ns/V 1) Truth Table guaranteed: 1.2V to 3.6V 2) VIN from 0.8V to 2V at VCC = 3.0V Table 6: DC Specifications Test Condition Symbol VIH VIL VOH VOL II Ioff IOZ ICC ∆ICC Parameter Value -40 to 85 °C -55 to 125 °C VCC (V) Min. High Level Input Voltage 1.65 to 1.95 0.65VCC 0.65VCC 2.3 to 2.7 2.7 to 3.6 1.7 2 1.7 2 Low Level Input Voltage 1.65 to 1.95 0.35VCC 0.35VCC 2.3 to 2.7 2.7 to 3.6 0.7 0.8 0.7 0.8 High Level Output Voltage 1.65 to 3.6 IO=-100 µA VCC-0.2 VCC-0.2 1.65 IO=-4 mA 1.2 1.2 2.3 IO=-8 mA 1.7 1.7 2.7 IO=-12 mA 2.2 2.2 3.0 IO=-18 mA 2.4 2.4 2.2 Low Level Output Voltage Input Leakage Current Power Off Leakage Current High Impedance Output Leakage Current Quiescent Supply Current ICC incr. per Input Max. Min. Unit Max. V V V 3.0 IO=-24 mA 1.65 to 3.6 IO=100 µA 0.2 0.2 1.65 IO=4 mA 0.45 0.45 2.3 IO=8 mA 0.7 0.7 2.2 V 2.7 IO=12 mA 0.4 0.4 3.0 IO=24 mA 0.55 0.55 3.6 VI = 0 to 5.5V ±5 ±5 µA 0 VI or VO = 5.5V 10 10 µA 3.6 VI = VIH or VIL VO = 0 to 5.5V ±5 ±5 µA VI = VCC or GND 10 10 VI or VO = 3.6 to 5.5V VIH = VCC-0.6V ± 10 ± 10 500 500 3.6 2.7 to 3.6 µA µA 3/12 74LVC125A Table 7: Dynamic Switching Characteristics Test Condition Symbol VOLP VOLV Parameter Value TA = 25 °C VCC (V) Dynamic Low Level Quiet Output (note 1) Min. Typ. Max. 0.8 CL = 50pF VIL = 0V, VIH = 3.3V 3.3 Unit V -0.8 1) Number of output 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 tPLH tPHL tPZL tPZH tPLZ tPHZ tOSLH tOSHL Parameter VCC (V) Propagation Delay Time 1.65 to 1.95 2.3 to 2.7 2.7 3.0 to 3.6 Output Enable Time 1.65 to 1.95 2.3 to 2.7 2.7 3.0 to 3.6 Output Disable Time 1.65 to 1.95 2.3 to 2.7 2.7 3.0 to 3.6 Output To Output 2.7 to 3.6 Skew Time (note1, 2) Value CL (pF) RL (Ω) ts = t r (ns) 30 30 50 50 30 30 50 50 30 30 50 50 1000 500 500 500 1000 500 500 500 1000 500 500 500 2.0 2.0 2.5 2.5 2.0 2.0 2.5 2.5 2.0 2.0 2.5 2.5 -40 to 85 °C Min. 1.5 1 1 1 2 2 Max. -55 to 125 °C Min. 9.0 6.3 5.5 4.8 9.9 7.4 6.6 5.4 11 5.6 5.0 4.6 1 Unit Max. 12 8.5 6.5 5.8 13 9.6 7.9 6.5 14 7.3 6.0 5.5 1 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 (tOSLH = | tPLHm - tPLHn|, tOSHL = | tPHLm - tPHLn| 2) Parameter guaranteed by design Table 9: Capacitive Characteristics Test Condition Symbol Parameter CIN Input Capacitance CPD Power Dissipation Capacitance (note 1) TA = 25 °C VCC (V) 1.8 2.5 3.3 Value Min. fIN = 10MHz Typ. Unit Max. 4 pF 28 30 34 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/n (per circuit) 4/12 74LVC125A Figure 3: Test Circuit RT = ZOUT of pulse generator (typically 50Ω) Table 10: Test Circuit And Waveform Symbol Value VCC Symbol 1.65 to 1.95V 2.3 to 2.7V 2.7V 3.0 to 3.6V CL 30pF 30pF 50pF 50pF RL = R1 1000Ω 500Ω 500Ω 500Ω VS 2 x VCC 2 x VCC 6V 6V VIH VCC VCC 2.7V 2.7V VM VCC/2 VCC/2 1.5V 1.5V VOH VCC VCC 3.0V 3.0V VX VOL + 0.15V VOL + 0.15V VOL + 0.3V VOL + 0.3V VY VOH - 0.15V VOH - 0.15V VOH - 0.3V VOH - 0.3V tr = tr <2.0ns <2.0ns <2.5ns <2.5ns Figure 4: Waveform - Propagation Delays (f=1MHz; 50% duty cycle) 5/12 74LVC125A Figure 5: Waveform - Output Enable And Disable Time (f=1MHz; 50% duty cycle) 6/12 74LVC125A 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 74LVC125A 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 74LVC125A 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 74LVC125A 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 74LVC125A Table 11: Revision History Date Revision 26-Jul-2004 8 Description of Changes Ordering Codes Revision - pag. 1. 11/12 74LVC125A 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. 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