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74LCXZ2245MSA PDF даташит

Спецификация 74LCXZ2245MSA изготовлена ​​​​«Fairchild Semiconductor» и имеет функцию, называемую «Low Voltage Bidirectional Transceiver with 5V Tolerant Inputs and Outputs and 26 Series Resistors in B Outputs».

Детали детали

Номер произв 74LCXZ2245MSA
Описание Low Voltage Bidirectional Transceiver with 5V Tolerant Inputs and Outputs and 26 Series Resistors in B Outputs
Производители Fairchild Semiconductor
логотип Fairchild Semiconductor логотип 

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74LCXZ2245MSA Даташит, Описание, Даташиты
October 2000
Revised October 2000
74LCXZ2245
Low Voltage Bidirectional Transceiver
with 5V Tolerant Inputs and Outputs
and 26Series Resistors in B Outputs
General Description
The LCXZ2245 contains eight non-inverting bidirectional
buffers with 3-STATE outputs and is intended for bus ori-
ented applications. The device is designed for low voltage
(2.7V and 3.3V) VCC applications with capability of interfac-
ing to a 5V signal environment. The T/R input determines
the direction of data flow through the device. The OE input
disables both the A and B ports by placing them in a high
impedance state. The 26series resistor in the B Port out-
put helps reduce output overshoot and undershoot.
The LCXZ2245 is fabricated with an advanced CMOS
technology to achieve high speed operation while maintain-
ing CMOS low power dissipation.
When VCC is between 0 and 1.5V, the LCXZ2245 is on the
high impedance state during power up or power down. This
places the outputs in the high impedance (Z) state prevent-
ing intermittent low impedance loading or glitching in bus
oriented applications.
Features
s 5V tolerant inputs and outputs
s 2.7V–3.6V VCC specifications provided
s 7.0 ns tPD max (VCC = 3.3V), 10 µA ICC max
s Power down high impedance inputs and outputs
s Supports live insertion/withdrawal (Note 1)
s ±12 mA output drive on the B Port (VCC = 3.0V)
s Implements patented noise/EMI reduction circuitry
s Latch-up performance exceeds 500 mA
s Equivalent 26series resistor on all B Port outputs
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
74LCXZ2245WM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74LCXZ2245SJ
M20D
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74LCXZ2245MSA
MSA20
20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide
74LCXZ2245MTC
MTC20
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter Xto the ordering code.
Logic Symbol
Connection Diagram
Pin Descriptions
Pin Names
OE
T/R
A0A7
B0B7
Description
Output Enable Input
Transmit/Receive Input
Side A Inputs or 3-STATE Outputs
Side B Inputs or 3-STATE Outputs
© 2000 Fairchild Semiconductor Corporation DS500410
www.fairchildsemi.com









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74LCXZ2245MSA Даташит, Описание, Даташиты
Truth Table
Inputs
OE T/R
Outputs
L L Bus B0 B7 Data to Bus A0 A7
L H Bus A0 A7 Data to Bus B0 B7
H X HIGH Z State on A0 A7, B0 B7 (Note 2)
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
Note 2: Unused bus terminals during HIGH Z State must be held HIGH or LOW.
Logic Diagram
www.fairchildsemi.com
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74LCXZ2245MSA Даташит, Описание, Даташиты
Absolute Maximum Ratings(Note 3)
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 4)
VI < GND
VO < GND
VO > VCC
Units
V
V
V
mA
mA
mA
mA
mA
°C
Recommended Operating Conditions (Note 5)
Symbol
Parameter
Min
Max
Units
VCC Supply Voltage
VI Input Voltage
VO Output Voltage
Operating
HIGH or LOW State
3-STATE
2.7
0
0
0
3.6
5.5
VCC
5.5
V
V
V
IOH/IOL Output Current in IOH/IOL - A Outputs
VCC = 3.0V 3.6V
VCC = 2.7V 3.0V
±24
mA
±12
Output Current in IOH/IOL - B Outputs
VCC = 3.0V 3.6V
VCC = 2.7V 3.0V
±12
mA
±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 3: 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 Conditionstable will define the conditions for actual device operation.
Note 4: IO Absolute Maximum Rating must be observed.
Note 5: Unused inputs or I/O pins 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
B Outputs
HIGH Level Output Voltage
A Outputs
Conditions
IOH = −100 µA
IOH = −4 mA
IOH = −6 mA
IOH = −8 mA
IOH = −12 mA
IOH = −100 µA
IOH = −12 mA
IOH = −18 mA
IOH = −24 mA
VCC
(V)
2.7 - 3.6
2.7 - 3.6
2.7 - 3.6
2.7
3.0
2.7
3.0
2.7 - 3.6
2.7
3.0
3.0
TA = −40°C to +85°C
Min Max
2.0
0.8
VCC 0.2
2.2
2.4
2.0
2.0
VCC 0.2
2.2
2.4
2.2
Units
V
V
V
3 www.fairchildsemi.com










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Номер в каталогеОписаниеПроизводители
74LCXZ2245MSALow Voltage Bidirectional Transceiver with 5V Tolerant Inputs and Outputs and 26 Series Resistors in B OutputsFairchild Semiconductor
Fairchild Semiconductor

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