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74LVC27D-74LVC27DB-74LVC27PW
Triple 3-input NOR gate
Product specification
Supersedes data of 1998 Apr 06
IC24 Data Handbook
1998 Apr 28
Philips Semiconductors Product specification
74LVC27Triple 3-input NOR gate
FEATURES Wide supply voltage: 1.2 to 3.6 V In accordance with JEDEC standard no. 8-1A. Inputs accept voltages up to 5.5 V CMOS low power consumption Direct interface with TTL levels Output capability: standard ICC category: SSI
DESCRIPTIONThe 74LVC27 is a high-performance, low-power, low-voltage Si-gate
CMOS device and superior to most advanced CMOS compatible
TTL families.
The 74LVC27 provides the 3-input NOR function.
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 × VCC2 × fi (CL × VCC2 × fo) where:
fi = input frequency in MHz; CL = output load capacity in pF;
fo = output frequency in MHz; VCC = supply voltage in V;
(CL × VCC 2 × fo) = sum of the outputs. The condition is VI = GND to VCC.
ORDERING INFORMATION
PIN CONFIGURATION
LOGIC SYMBOL (IEEE/IEC)
Philips Semiconductors Product specification
74LVC27Triple 3-input NOR gate
PIN DESCRIPTION
LOGIC SYMBOL
LOGIC DIAGRAM (ONE GATE)
FUNCTION TABLE
NOTES:H = HIGH voltage level
L = LOW voltage level
X = don’t care
RECOMMENDED OPERATING CONDITIONS
Philips Semiconductors Product specification
74LVC27Triple 3-input NOR gate
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.
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.
Philips Semiconductors Product specification
74LVC27Triple 3-input NOR gate
AC CHARACTERISTICSGND = 0 V; tr = tf � 2.5 ns; CL = 50 pF; RL = 500; Tamb = –40C to +85C
NOTE: These typical values are at VCC = 3.3V and Tamb = 25°C.
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.
Figure 1. Input (nA, nB, nC) to output (nY) propagation delays.
TEST CIRCUIT
Figure 2. Load circuitry for switching times.
Philips Semiconductors Product specification
74LVC27Triple 3-input NOR gate
SO14: plastic small outline package; 14 leads; body width 3.9 mm SOT108-1
