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74LCX16244 PDF даташит

Спецификация 74LCX16244 изготовлена ​​​​«Fairchild Semiconductor» и имеет функцию, называемую «Low Voltage 16-Bit Buffer/Line Driver with 5V Tolerant Inputs and Outputs».

Детали детали

Номер произв 74LCX16244
Описание Low Voltage 16-Bit Buffer/Line Driver with 5V Tolerant Inputs and Outputs
Производители Fairchild Semiconductor
логотип Fairchild Semiconductor логотип 

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74LCX16244 Даташит, Описание, Даташиты
February 1994
Revised April 1999
74LCX16244
Low Voltage 16-Bit Buffer/Line Driver with 5V Tolerant
Inputs and Outputs
General Description
The LCX16244 contains sixteen non-inverting buffers with
3-STATE outputs designed to be employed as a memory
and address driver, clock driver, or bus oriented transmit-
ter/receiver. The device is nibble controlled. Each nibble
has separate 3-STATE control inputs which can be shorted
together for full 16-bit operation.
The LCX16244 is designed for low voltage (2.5V or 3.3V)
VCC applications with capability of interfacing to a 5V signal
environment.
The LCX16244 is fabricated with an advanced CMOS tech-
nology to achieve high speed operation while maintaining
CMOS low power dissipation.
Features
s 5V tolerant inputs and outputs
s 2.3V–3.6V VCC specifications provided
s 4.5 ns tPD max (VCC = 3.0V), 20 µA ICC max
s Power down high impedance inputs and outputs
s Supports live insertion/withdrawal (Note 1)
s ±24 mA output drive (VCC = 3.0V)
s Implements patented noise/EMI reduction circuitry
s Latch-up performance exceeds 500 mA
s ESD performance:
Human body model > 2000V
Machine model > 200V
Note 1: To ensure the high-impedance state during power up or down OE
should be tied to VCC through a pull-up resistor: the minimum value or the
resistor is determined by the current-sourcing capability of the driver.
Ordering Code:
Order Number Package Number
Package Description
74LCX16244MEA
MS48A
48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300” Wide
74LCX16244MTD
MTD48
48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Logic Symbol
Pin Descriptions
Pin Names
OEn
I0–I15
O0–O15
Description
Output Enable Input (Active LOW)
Inputs
Outputs
© 1999 Fairchild Semiconductor Corporation DS012000.prf
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74LCX16244 Даташит, Описание, Даташиты
Truth Tables
OE1
L
L
H
Inputs
I0–I3
L
H
X
Outputs
O0–O3
L
H
Z
OE3
L
L
H
Inputs
I8–I11
L
H
X
Outputs
O8–O11
L
H
Z
Inputs
OE2
L
L
H
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
I4–I7
L
H
X
Outputs
O4–O7
L
H
Z
Functional Description
The LCX16244 contains sixteen non-inverting buffers with
3-STATE standard outputs. The device is nibble (4 bits)
controlled with each nibble functioning identically, but inde-
pendent of the other. The control pins can be shorted
together to obtain full 16-bit operation. The 3-STATE out-
Logic Diagram
OE4
L
L
H
Inputs
I12–I15
L
H
X
Outputs
O12–O15
L
H
Z
puts are controlled by an Output Enable (OEn) input for
each nibble. When OEn is LOW, the outputs are in 2-state
mode. When OEn is HIGH, the outputs are in the high
impedance mode, but this does not interfere with entering
new data into the inputs.
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74LCX16244 Даташит, Описание, Даташиты
Absolute Maximum Ratings(Note 2)
Symbol
Parameter
VCC Supply Voltage
VI DC Input Voltage
VO DC Output Voltage
IIK DC Input Diode Current
IOK DC Output Diode Current
IO
ICC
IGND
TSTG
DC Output Source/Sink Current
DC Supply Current per Supply Pin
DC Ground Current per Ground Pin
Storage Temperature
Value
0.5 to +7.0
0.5 to +7.0
0.5 to +7.0
0.5 to VCC + 0.5
50
50
+50
±50
±100
±100
65 to +150
Conditions
Output in 3-STATE
Output in HIGH or LOW State (Note 3)
VI < GND
VO < GND
VO > VCC
Recommended Operating Conditions (Note 4)
Units
V
V
V
mA
mA
mA
mA
mA
°C
Symbol
Parameter
Min
Max
Units
VCC Supply Voltage
Operating
Data Retention
2.0
1.5
3.6
3.6
V
VI Input Voltage
VO Output Voltage
0 5.5 V
HIGH or LOW State 0 VCC V
3-STATE 0
5.5
IOH/IOL Output Current
VCC = 3.0V 3.6V
±24
VCC = 2.7V 3.0V
±12 mA
VCC = 2.3V 2.7V
±8
TA Free-Air Operating Temperature
40 85
°C
t/V
Input Edge Rate, VIN = 0.8V–2.0V, VCC = 3.0V
0 10 ns/V
Note 2: The Absolute Maximum Ratings are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated
at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the Absolute Maximum Ratings. The “Recom-
mended Operating Conditions” table will define the conditions for actual device operation.
Note 3: IO Absolute Maximum Rating must be observed.
Note 4: Unused inputs must be held HIGH or LOW. They may not float.
DC Electrical Characteristics
Symbol
Parameter
VIH HIGH Level Input Voltage
VIL LOW Level Input Voltage
VOH HIGH Level Output Voltage
VOL LOW Level Output Voltage
II Input Leakage Current
IOZ 3-STATE Output Leakage
IOFF Power-Off Leakage Current
Conditions
IOH = −100 µA
IOH = −8 mA
IOH = −12 mA
IOH = −18 mA
IOH = −24 mA
IOL = 100 µA
IOL = 8 mA
IOL = 12 mA
IOL = 16 mA
IOL = 24 mA
0 VI 5.5V
0 VO 5.5V
VI = VIH or VIL
VI or VO = 5.5V
VCC
(V)
2.3 2.7
2.7 3.6
2.3 2.7
2.7 3.6
2.3 3.6
2.3
2.7
3.0
3.0
2.3 3.6
2.3
2.7
3.0
3.0
2.3 3.6
2.3 3.6
TA = −40°C to +85°C
Min Max
1.7
2.0
0.7
0.8
VCC 0.2
1.8
2.2
2.4
2.2
0.2
0.6
0.4
0.4
0.55
±5.0
±5.0
0 10
Units
V
V
V
V
µA
µA
µA
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