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NXP Semiconductors |
INTEGRATED CIRCUITS
74LVC2373A
74LVCH2373A
Octal D-type transparent latch with 5-volt
tolerant inputs/outputs; damping resistor
(3-State)
Product specification
IC24 Data Handbook
1997 Mar 12
Philips
Semiconductors
Philips Semiconductors
Octal D-type transparent latch with 5-volt tolerant
inputs/outputs; damping resistor (3-State)
Product specification
74LVC2373A
74LVCH2373A
FEATURES
• 5-volt tolerant inputs/outputs, for interfacing with 5-volt logic
• Supply voltage range of 2.7V to 3.6V
• Complies with JEDEC standard no. 8-1A
• CMOS low power consumption
• Direct interface with TTL levels
• High impedance when VCC = 0V
• Bushold on all data inputs (74LVCH2373A only)
• Integrated 30W damping resistor
DESCRIPTION
The 74LVC2373A/74LVCH2373A 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 5V devices. This feature allows the use of these devices as
translators in a mixed 3.3V/5V environment.
The 74LVC2373A/74LVCH2373A is an octal D-type transparent
latch featuring separate D-type inputs for each latch and 3-State
outputs for bus oriented applications. A latch enable (LE) input and
an output enable (OE) input are common to all internal latches.
The ‘2373’ consists of eight D-type transparent latches with 3-State
true outputs. When LE is HIGH, data at the Dn inputs enters the
latches. In this condition the latches are transparent, i.e., a latch
output will change each time its corresponding D-input changes.
QUICK REFERENCE DATA
GND = 0V; Tamb = 25°C; tr = tf v2.5 ns
SYMBOL
PARAMETER
When LE is LOW the latches store the information that was present
at the D-inputs a set-up time preceding the HIGH-to-LOW transition
of LE. When OE is LOW, the contents of the eight latches are
available at the outputs. When OE is HIGH, the outputs go to the
high impedance OFF-state. Operation of the OE input does not
affect the state of the latches.
CONDITIONS
TYPICAL
UNIT
tPHL/tPLH
Propagation delay
Dn to Qn
LE to Qn
CL = 50pF
VCC = 3.3V
4.4 ns
5.0
CI Input capacitance
CPD Power dissipation capacitance per latch Notes 1, 2
NOTES:
1. CPD is used to determine the dynamic power dissipation (PD in µW)
PD = CPD × VCC2 × fi )Σ (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;
Σ (CL × VCC2 × fo) = sum of the outputs.
2. The condition is VI = GND to VCC.
5.0 pF
20 pF
ORDERING AND PACKAGE INFORMATION
PACKAGES
TEMPERATURE RANGE
20-Pin Plastic SO
20-Pin Plastic SSOP Type II
20-Pin Plastic TSSOP Type I
20-Pin Plastic SO
20-Pin Plastic SSOP Type II
20-Pin Plastic TSSOP Type I
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
OUTSIDE NORTH
AMERICA
74LVC2373A D
74LVC2373A DB
74LVC2373A PW
74LVCH2373A D
74LVCH2373A DB
74LVCH2373A PW
NORTH AMERICA
74LVC2373A D
74LVC2373A DB
LVC2373APW DH
74LVCH2373A D
7LVCH2373A DB
VCH2373APW DH
PKG. DWG. #
SOT163-1
SOT339-1
SOT360-1
SOT163-1
SOT339-1
SOT360-1
1997 Mar 12
2 853–1940 17843
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