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74LVC125A
LOW VOLTAGE CMOS QUAD BUS BUFFERS (3-STATE) HIGH PERFORMANCE
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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
SOP
TSSOP
ORDER CODES
PACKAGE SOP TSSOP TUBE 74LVC125AM T&R 74LVC125AMTR 74LVC125ATTR
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.
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.
PIN CONNECTION AND IEC LOGIC SYMBOLS
February 2002
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74LVC125A
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No 1, 4, 9, 12 2, 5, 10, 13 3, 6, 8, 11 7 14 SYMBOL G1 to G4 A1 to A4 Y1 to Y4 GND V CC NAME AND FUNCTION Output Enable Inputs Data Inputs Data Outputs Ground (0V) Positive Supply Voltage
TRUTH TABLE
A X L H
X : Don't care Z : High Impedance
G H L L
Y Z L H
ABSOLUTE MAXIMUM RATINGS
Symbol V CC VI VO VO IIK IOK IO Tstg TL Supply Voltage DC Input Voltage DC Output Voltage (High Impedance or VCC = 0V) DC Output Voltage (High or Low State) (note 1) DC Input Diode Current DC Output Diode Current (note 2) DC Output Current 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 -65 to +150 300 Unit V V V V mA mA mA mA C C
ICC or IGND DC VCC or Ground Current per Supply Pin
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
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74LVC125A
RECOMMENDED OPERATING CONDITIONS
Symbol V CC VI VO VO IOH, IOL IOH, IOL IOH, IOL IOH, IOL Top dt/dv Supply Voltage (note 1) Input Voltage Output Voltage (High Impedance or VCC = 0V) Output Voltage (High or Low State) High or Low Level Output Current (V CC = 3.0 to 3.6V) High or Low Level Output Current (V CC = 2.7 to 3.0V) High or Low Level Output Current (V CC = 2.3 to 2.7V) High or Low Level Output Current (V CC = 1.65 to 2.3V) Operating Temperature Input Rise and Fall Time (note 2) Parameter Value 1.65 to 3.6 0 to 5.5 0 to 5.5 0 to VCC 24 12 8 4 -55 to 125 0 to 10 Unit V V V V mA mA mA mA C ns/V
1) Truth Table guaranteed: 1.2V to 3.6V 2) VIN from 0.8V to 2V at VCC = 3.0V
DC SPECIFICATIONS
Test Condition Symbol Parameter VCC (V) 1.65 to 1.95 2.3 to 2.7 2.7 to 3.6 1.65 to 1.95 2.3 to 2.7 2.7 to 3.6 1.65 to 3.6 1.65 2.3 2.7 3.0 3.0 VOL Low Level Output Voltage 1.65 to 3.6 1.65 2.3 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 3.6 0 3.6 IO=-100 A IO=-4 mA IO=-8 mA IO=-12 mA IO=-18 mA IO=-24 mA IO=100 A IO=4 mA IO=8 mA IO=12 mA IO=24 mA VI = 0 to 5.5V V I or VO = 5.5V V I = VIH orV IL V O = 0 to 5.5V VI = VCC or GND 3.6 2.7 to 3.6 VI or VO = 3.6 to 5.5V V IH = VCC-0.6V VCC-0.2 1.2 1.7 2.2 2.4 2.2 0.2 0.45 0.7 0.4 0.55 5 10 5 -40 to 85 C Min. 0.65VCC 1.7 2 0.35VCC 0.7 0.8 VCC-0.2 1.2 1.7 2.2 2.4 2.2 0.2 0.45 0.7 0.4 0.55 5 10 5 A A A V V Max. Value -55 to 125 C Min. 0.65VCC 1.7 2 0.35VCC 0.7 0.8 V V Max. Unit
VIH
High Level Input Voltage Low Level Input Voltage High Level Output Voltage
VIL
V OH
ICC
10 10 500
10 10 500 A A 3/9
ICC
74LVC125A
DYNAMIC SWITCHING CHARACTERISTICS
Test Condition Symbol Parameter VCC (V) 3.3 CL = 50pF VIL = 0V, V IH = 3.3V Value TA = 25 C Min. Typ. 0.8 -0.8 Max. V Unit
VOLP V OLV
Dynamic Low Level Quiet Output (note 1)
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.
AC ELECTRICAL CHARACTERISTICS
Test Conditio n Symbol Parameter VCC (V) CL (pF) 30 30 50 50 30 30 50 50 30 30 50 50 RL () 1000 500 500 500 1000 500 500 500 1000 500 500 500 ts = tr (ns) 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. Max. 9.0 6.3 5.5 4.8 9.9 7.4 6.6 5.4 11 5.6 5.0 4.6 1 Value -55 to 125 C Min. Max. 12 8.5 6.5 5.8 13 9.6 7.9 6.5 14 7.3 6.0 5.5 1 Unit
tPLH t PHL
Propagation Delay Time
tPZL tPZH
tPLZ tPHZ
tOSLH tOSHL
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)
1.5 1
ns
1 1
ns
2 2
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
CAPACITIVE CHARACTERISTICS
Test Condition Symbol Parameter VCC (V) Value TA = 25 C Min. fIN = 10MHz Typ. 4 1.8 2.5 3.3 28 30 34 Max. pF pF Unit
CIN CPD
Input 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/n (per circuit)
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74LVC125A
TEST CIRCUIT
R T = ZOUT of pulse generator (typically 50)
TEST CIRCUIT AND WAVEFORM SYMBOL VALUE
Symbol 1.65 to 1.95V CL RL = R1 VS V IH VM VOH VX VY tr = tr 30pF 1000 2 x V CC VCC VCC/2 VCC VOL + 0.15V VOH - 0.15V <2.0ns 2.3 to 2.7V 30pF 500 2 x V CC VCC VCC/2 VCC VOL + 0.15V VOH - 0.15V <2.0ns VCC 2.7V 50pF 500 6V 2.7V 1.5V 3.0V VOL + 0.3V VOH - 0.3V <2.5ns 3.0 to 3.6V 50pF 500 6V 2.7V 1.5V 3.0V VOL + 0.3V VOH - 0.3V <2.5ns
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74LVC125A
WAVEFORM 1: PROPAGATION DELAYS (f=1MHz; 50% duty cycle)
WAVEFORM 2: OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle)
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74LVC125A
SO-14 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 8.55 5.8 1.27 7.62 4.0 5.3 1.27 0.68 8 (max.) 0.149 0.181 0.019 8.75 6.2 0.35 0.19 0.5 45 (typ.) 0.336 0.228 0.050 0.300 0.157 0.208 0.050 0.026 0.344 0.244 0.1 mm. MIN. TYP MAX. 1.75 0.2 1.65 0.46 0.25 0.013 0.007 0.019 0.003 MIN. inch TYP. MAX. 0.068 0.007 0.064 0.018 0.010
PO13G
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74LVC125A
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
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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. 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. (c) The ST logo is a registered trademark of STMicroelectronics (c) 2002 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. (c) http://www.st.com
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