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74LVC125AM ,LOW VOLTAGE CMOS QUAD BUS BUFFERS HIGH PERFORMANCEAbsolute Maximum Ratings are those values beyond which damage to the device may occur. Functional o ..
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74LVC125AD-
Quad buffer/line driver with 5-volt tolerant inputs/outputs 3-State
Product specification
Supersedes data of 1997 Aug 01
IC24 Data Handbook
1998 Apr 28
Philips Semiconductors Product specification
74LVC125AQuad buffer/line driver with 5-volt
tolerant inputs/outputs (3-state)
FEATURES 5-volt tolerant inputs/outputs, for interfacing with 5-volt logic Supply voltage range of 1.2V to 3.6V Complies with JEDEC standard no. 8-1A CMOS low power consumption Direct interface with TTL levels High impedance when VCC = 0V
DESCRIPTIONThe 74LVC125A is a high performance, low-power, low-voltage
Si-gate CMOS device and superior to most advanced CMOS
compatible TTL families.
Inputs can be driven from either 3.3V or 5.0V devices. In 3-state
operation, outputs can handle 5V.
The 74LVC125A consists of four non-inverting buffers/line drivers
with 3-state outputs. The 3-state outputs (nY) are controlled by the
output enable input (nOE). A HIGH at nOE causes the outputs to
assume a high impedance OFF-state.
QUICK REFERENCE DATAGND = 0 V; Tamb = 25°C; tr = tf ≤ 2.5 ns
NOTES: CPD is used to determine the dynamic power dissipation (PD in μW)
PD = CPD × VCC 2 × fi (CL × VCC 2 × fo) where:
fi = input frequency in MHz; CL = output load capacity in pF;
fo = output frequency in MHz; VCC = supply voltage in V;
(CL × VCC2 × fo) = sum of the outputs. The condition is VI = GND to VCC
ORDERING INFORMATION
Philips Semiconductors Product specification
74LVC125AQuad buffer/line driver with 5-volt
tolerant inputs/outputs (3-state)
PIN CONFIGURATION
PIN DESCRIPTION
LOGIC SYMBOL
FUNCTION TABLE
NOTES:H = HIGH voltage level
L = LOW voltage level
X = don’t care
Z = high impedance OFF-state
LOGIC SYMBOL (IEEE/IEC)
Philips Semiconductors Product specification
74LVC125AQuad buffer/line driver with 5-volt
tolerant inputs/outputs (3-state)
RECOMMENDED OPERATING CONDITIONS
ABSOLUTE MAXIMUM RATINGS1In accordance with the Absolute Maximum Rating System (IEC 134)
Voltages are referenced to GND (ground = 0V)
NOTES: Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the
device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
Philips Semiconductors Product specification
74LVC125AQuad buffer/line driver with 5-volt
tolerant inputs/outputs (3-state)
DC ELECTRICAL CHARACTERISTICSOver recommended operating conditions voltages are referenced to GND (ground = 0V)
NOTE: All typical values are at VCC = 3.3V and Tamb = 25°C. For I/O ports the parameter IOZ includes the input leakage current.
AC CHARACTERISTICSGND = 0 V; tr = tf = 2.5 ns; CL = 50 pF; RL = 500
NOTE: These typical values are at VCC = 3.3V and Tamb = 25°C.
Philips Semiconductors Product specification
74LVC125AQuad buffer/line driver with 5-volt
tolerant inputs/outputs (3-state)
AC WAVEFORMSVM = 1.5 V at VCC � 2.7 V;
VM = 0.5 VCC at VCC < 2.7 V
VOL and VOH are the typical output voltage drop that occur with the
output load.
VX = VOL + 0.3 V at VCC ≥ 2.7 V
VX = VOL + 0.1 V at VCC > 2.7 V
VY = VOH – 0.3 V at VCC ≥ 2.7 V
VY = VOH – 0.1 V at VCC < 2.7 V
Figure 1. Input (nA) to output (nY) propagation delays.
Figure 2. 3-state enable and disable times.
TEST CIRCUIT
Figure 3. Load circuitry for switching times.
