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74LVCH32244AEC PDF даташит

Спецификация 74LVCH32244AEC изготовлена ​​​​«NXP Semiconductors» и имеет функцию, называемую «32-bit buffer/line driver; 5 V input/output tolerant; 3-state».

Детали детали

Номер произв 74LVCH32244AEC
Описание 32-bit buffer/line driver; 5 V input/output tolerant; 3-state
Производители NXP Semiconductors
логотип NXP Semiconductors логотип 

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74LVCH32244AEC Даташит, Описание, Даташиты
INTEGRATED CIRCUITS
DATA SHEET
74LVC32244A; 74LVCH32244A
32-bit buffer/line driver; 5 V
input/output tolerant; 3-state
Product specification
File under Integrated Circuits, IC24
1999 Aug 31









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74LVCH32244AEC Даташит, Описание, Даташиты
Philips Semiconductors
32-bit buffer/line driver; 5 V input/output
tolerant; 3-state
Product specification
74LVC32244A;
74LVCH32244A
FEATURES
5 V tolerant inputs/outputs for interfacing with 5 V logic
Wide supply voltage range of 1.2 to 3.6 V
CMOS low power consumption
MULTIBYTEflow-trough standard pin-out architecture
Low inductance multiple power and ground pins for
minimum noise and ground bounce
Direct interface with TTL levels
Bus hold on data inputs (74LVCH32244A only)
Typical output ground bounce voltage:
VOLP <0.8 V at VCC = 3.3 V; Tamb = 25 °C
Typical output VOH undershoot voltage:
VOHV >2 V at VCC = 3.3 V; Tamb = 25 °C
Power-off disabled outputs, permitting live insertion
Plastic fine-pitch ball grid array package.
DESCRIPTION
The 74LVC(H)32244A is a high-performance, low-power,
low-voltage, Si-gate CMOS device, superior to most
advanced CMOS compatible TTL families. Inputs can be
driven from either 3.3 or 5 V devices. In 3-state operation,
outputs can handle 5 V. These features allow the use of
these devices in a mixed 3.3 and 5 V environment.
The 74LVC(H)32244A is a 32-bit non-inverting buffer/line
driver with 3-state outputs. The 3-state outputs are
controlled by the output enable inputs 1OE and 2OE.
A HIGH on input nOE causes the outputs to assume a
high-impedance OFF-state.
To ensure the high-impedance state during power-up or
power-down, input nOE should be tied to VCC through a
pull-up resistor; the minimum value of the resistor is
determined by the current-sinking capability of the driver.
The 74LVCH32244A bus hold data input circuit eliminates
the need for external pull-up resistors to hold unused or
floating data inputs at a valid logic level (see Fig.3).
QUICK REFERENCE DATA
Ground = 0 V; Tamb = 25 °C; tr = tf 2.5 ns.
SYMBOL
tPHL/tPLH
CI
CPD
PARAMETER
propagation delay nAn to nYn
input capacitance
power dissipation capacitance per buffer
CONDITIONS
TYPICAL
CL = 50 pF; VCC = 3.3 V 3.0
5.0
VI = GND to VCC; note 1 25
Note
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;
fo = output frequency in MHz;
CL = output load capacitance in pF;
VCC = supply voltage in Volts;
Σ(CL × VCC2 × fo) = sum of the outputs.
UNIT
ns
pF
pF
1999 Aug 31
2









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74LVCH32244AEC Даташит, Описание, Даташиты
Philips Semiconductors
32-bit buffer/line driver; 5 V input/output
tolerant; 3-state
Product specification
74LVC32244A;
74LVCH32244A
FUNCTION TABLE
See note 1.
INPUT
nOE
L
L
H
Note
1. H = HIGH voltage level;
L = LOW voltage level;
X = don’t care;
Z = high-impedance OFF-state.
nAn
L
H
X
OUTPUT
nYn
L
H
Z
ORDERING INFORMATION
TYPE NUMBER
74LVC32244AEC
74LVCH32244AEC
TEMPERATURE
RANGE
40 to +85 °C
PACKAGES
PINS
96
96
PACKAGE MATERIAL CODE
LFBGA96
LFBGA96
plastic
plastic
SOT536-1
SOT536-1
PINNING
SYMBOL
nAn
nYn
GND
nOE
VCC
DESCRIPTION
data inputs
data outputs
ground (0 V)
3-state output enable inputs (active LOW)
DC supply voltage
1999 Aug 31
3










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