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74ALVC16244DGG-74ALVC16244DL-74ALVCH16244DGG-74ALVCH16244DL
2.5V/3.3V 16-bit buffer/line driver 3-State
Product specification
Supersedes data of 1997 Mar 21
IC24 Data Handbook
1998 Jun 29
Philips Semiconductors Product specification
74ALVC16244/
74ALVCH1624416-bit buffer/line driver (3-State)
FEATURES Wide supply voltage range of 1.2V to 3.6V Complies with JEDEC standard no. 8-1A CMOS low power consumption MULTIBYTETM flow-through standard pin-out architecture Low inductance multiple VCC and GND pins for minimum noise
and ground bounce Direct interface with TTL levels Bus hold on data inputs (74ALVCH16244 only) Output drive capability 50Ω transmission lines @ 85°C Current drive ±24 mA at 3.0 V
DESCRIPTIONThe 74ALVC16244(74ALVCH16244) is a 16-bit non-inverting
buffer/line driver with 3-State outputs. The device can be used as
four 4-bit buffers, two 8-bit buffers or one 16-bit buffer. The 3-State
outputs are controlled by the output enable inputs 1OE and 2OE. A
HIGH on nOE causes the outputs to assume a high impedance
OFF-state.
The 74ALVCH16244 has active bus hold circuitry which is provided
to hold unused or floating data inputs at a valid logic level. This
feature eliminates the need for external pull-up or pull-down
resistors.
The 74ALVC16244 has 5V tolerant inputs.
PIN CONFIGURATION
QUICK REFERENCE DATAGND = 0 V; Tamb = 25°C; tr = tf ≤ 2.5 ns
NOTE: CPD is used to determine the dynamic power dissipation (PD in W):
PD = CPD × VCC 2 × fi + (CL × VCC 2 × fo) where: fi = input frequency in MHz; CL = output load capacitance in pF;
fo = output frequency in MHz; VCC = supply voltage in V; (CL × VCC 2 × fo) = sum of the outputs.
ORDERING INFORMATION
Philips Semiconductors Product specification
74ALVC16244/
74ALVCH1624416-bit buffer/line driver (3-State)
PIN DESCRIPTION
LOGIC SYMBOL
FUNCTION TABLEH = HIGH voltage level
L = LOW voltage level
X = don’t care
Z = high impedance OFF-state
LOGIC SYMBOL (IEEE/IEC)
BUS HOLD CIRCUIT
Philips Semiconductors Product specification
74ALVC16244/
74ALVCH1624416-bit buffer/line driver (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
74ALVC16244/
74ALVCH1624416-bit buffer/line driver (3-State)
DC CHARACTERISTICSOver recommended operating conditions. Voltage are referenced to GND (ground = 0 V).
Philips Semiconductors Product specification
74ALVC16244/
74ALVCH1624416-bit buffer/line driver (3-State)
DC ELECTRICAL CHARACTERISTICS (Continued)Over recommended operating conditions. Voltage are referenced to GND (ground = 0 V).
NOTES: All typical values are at Tamb = 25°C. Valid for data inputs of bus hold parts.
AC CHARACTERISTICS FOR VCC = 2.3V TO 2.7V RANGE AND VCC < 2.3VGND = 0V; tr = tf ≤ 2.0ns; CL = 30pF
NOTES: All typical values are measured at Tamb = 25°C. Typical value is measured at VCC = 2.5V
AC CHARACTERISTICS FOR VCC = 3.0V TO 3.6V RANGE AND VCC = 2.7VGND = 0V; tr = tf ≤ 2.5ns; CL = 50pF
NOTES: All typical values are measured at Tamb = 25°C. Typical value is measured at VCC = 3.3V
