PI74FCT245CTSX [DIODES]
Bus Transceiver, FCT Series, 1-Func, 8-Bit, True Output, CMOS, PDSO20, 0.300 INCH, PLASTIC, SOIC-20;
| 型号： | PI74FCT245CTSX |
| 厂家： | 
DIODES INCORPORATED |
| 描述： | Bus Transceiver, FCT Series, 1-Func, 8-Bit, True Output, CMOS, PDSO20, 0.300 INCH, PLASTIC, SOIC-20 光电二极管 逻辑集成电路 |
| 文件： | 总7页 (文件大小：557K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PI74FCT245T
PI74FCT2245T (25Ω Series)
Fast CMOS Octal Bidirectional Transceivers
Description
Features
• Pin compatible with bipolar FAST™ Series at a higher speed
Pericom Semiconductor’s PI74FCT245T and PI74FCT2245T are
8-bit wide octal buffer bidirectional transceivers designed for
asynchronous two-way communication between data buses. The
transmit/receive (T/R) input determines the direction of data flow
throughthebidirectionaltransceiver.Transmit(activeHIGH)enables
datafromAportstoBports, andreceive(activeLOW)fromBports
toAports.Theoutputenable(OE)input,whenHIGH,disablesboth
A and B ports by placing them in Hi-Z condition.
and lower power consumption
• 25-ohm series resistor on all outputs (FCT2245Tonly)
• TTL input and output levels
• Low ground bounce outputs
• Extremelylowstaticpower
• Hysteresis on all inputs
• Industrial operating temperature range: –40°C to +85°C
• Packaging(Pb-free&GreenAvailable):
– 20-pin173-milwideplasticTSSOP(L)
– 20-pin300-milwideplasticSOIC(S)
– 20-pin209-milwideplasticSSOP(H)
– 20-pin150-milwideplasticQSOP(Q)
PI74FCT2245Thasabuilt-in25-ohmseriesresistoronalloutputsto
reducenoisebecauseofreflections, thuseliminatingtheneedforan
externalterminatingresistor.
PinConfiguration
T/R
1
20 Vcc
19 OE
A
A
A
A
A
A
A
A
0
1
2
3
4
5
6
7
2
BlockDiagram
B0
B1
B2
B3
B4
B5
B6
B7
3
18
17
16
15
14
13
12
11
4
5
6
T/R
7
8
OE
9
A0
B0
A1
B1
A2
GND
10
PinDescription
PinName
OE
Description
3-State Output Enable Inputs (Active LOW)
Transmit/ReceiveInput
Side A Inputs or 3-State Outputs
Side B Inputs or 3-State Outputs
Ground
T/R
B2
A0-A7
B0-B7
GND
A3
B3
A4
V
CC
Power
B4
(1)
TruthTable
A5
Inputs
B5
OE
L
T/R
Outputs
L
H
X
Bus B Data to Bus A
Bus A Data to Bus B
High Z State
A6
L
B6
H
A7
B7
1. H = High Voltage Level, X = Don't Care, L = Low
Voltage Level, Z = High Impedance
PS2012E
08/08/06
06-0207
1
PI74FCT245T
PI74FCT2245T(25OhmSeries)
OctalBidirectionalTransceivers
MaximumRatings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature .................................................................... –65°Cto+150°C
Ambient Temperature with Power Applied ....................................–40°Cto+85°C
Note:
Stresses greater than those listed under MAXIMUM
RATINGSmaycausepermanentdamagetothedevice.
This is a stress rating only and functional operation
of the device at these or any other conditions above
those indicated in the operational sections of this
specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may
affect reliability.
Supply Voltage to Ground Potential (Inputs & V Only) ............. –0.5Vto+7.0V
CC
Supply Voltage to Ground Potential (Outputs & D/O Only) ........... –0.5Vto+7.0V
DC Input Voltage ............................................................................ –0.5Vto+7.0V
DC Output Current ...................................................................................... 120mA
Power Dissipation ..........................................................................................0.5W
DC Electrical Characteristics (Over the Operating Range, T = –40°C to +85°C, V = 5.0V ±5%)
A
CC
(1)
(2)
Parameters Description
TestConditions
Min. Typ
Max. Units
V
OutputHIGHVoltage
Output LOW Current
Output LOW Current
InputHIGHVoltage
Input LOW Voltage
InputHIGHCurrent
Input LOW Current
InputHIGHCurrent
Input LOW Current
HighImpedance
V
V
V
= Min., V = V or V
I
I
I
=–15.0mA
=64mA
2.4
3.0
V
OH
CC
CC
CC
IN
IH
IL
IL
IL
OH
OL
OL
V
OL
= Min., V = V or V
0.3
0.3
0.55
0.50
V
V
IN
IH
V
OL
= Min., V = V or V
=12mA(25Ω Series)
IN
IH
V
IH
GuaranteedLogicHIGHLevel
GuaranteedLogicLOWLevel
2.0
V
V
IL
0.8
1
V
I
I
I
I
I
I
(ExceptI/Opins)V =Max.
V
V
V
V
V
V
=VCC
=GND
=VCC
=GND
μA
μA
μA
μA
μA
μA
V
IH
CC
IN
(ExceptI/Opins)V =Max.
–1
1
IL
CC
IN
(I/OpinsOnly)V =Max.
IH
CC
IN
(I/OpinsOnly)V =Max.
–1
1
IL
CC
IN
V
CC
= MAX.
=2.7V
=0.5V
OZH
OZL
OUT
OUT
Output Current
–1
V
IK
ClampDiodeVoltage
PowerDownDisable
ShortCircuitCurrent
Input Hysteresis
V
CC
V
CC
V
CC
=Min., I =–18mA
–0.7 –1.2
100
IN
I
=GND,V
=4.5V
μA
mA
mV
OFF
OUT
(3)
I
OS
=Max. ,V
= GND
OUT
–60 –120
200
V
H
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 5.0V, +25°C ambient and maximum loading.
3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
Capacitance(T =25°C,f=1MHz)
A
(1)
Parameters
Description
TestConditions
Typ.
6
Max.
10
Units
pF
C
IN
Input Capacitance
Output Capacitance
V
IN
=0V
C
V
OUT
=0V
8
12
pF
OUT
Notes:
1. These Parameters are determined by device characterization but are not production tested.
PS2012E
08/08/06
06-0207
2
PI74FCT245T
PI74FCT2245T(25OhmSeries)
OctalBidirectionalTransceivers
PowerSupplyCharacteristics
(1)
(2)
Parameters Description
TestConditions
Min. Typ
Max.
Units
I
Quiescent Power
Supply Current
V
V
V
=Max.
=Max.,
=Max.,
V
= GND orV
CC
0.1
500
μA
CC
CC
CC
CC
IN
(3)
ΔI
Supply Current per
Input@TTLHIGH
V
IN
=3.4V
0.5
2.0
mA
CC
I
Supply Current per
V
V
=V
CC
=GND
0.15
0.25
mA/
MHz
CCD
IN
(4)
Input per MHz
Outputs Open
OE=GND
IN
T/R=GNDorV
CC
One Input Toggling
50%DutyCycle
(5)
I
C
Total Power Supply
Current
V
=Max.,
V
V
=V
CC
=GND
1.5
1.8
3.5
mA
CC
IN
(6)
Outputs Open
IN
f = 10 MHZ
I
(5)
50%DutyCycle
T/R=OE=GND
One Bit Toggling
V
V
=3.4V
=GND
4.5
IN
IN
(5)
V
=Max.,
V
V
=V
CC
=GND
3.0
5.0
6.0
CC
IN
Outputs Open
IN
f = 2.5 MHZ
I
(5)
50%DutyCycle
T/R=OE=GND
Eight Bits Toggling
V
V
=3.4V
=GND
14.0
IN
IN
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at VCC = 5.0V, +25°C ambient.
3. Per TTL driven input (VIN = 3.4V); all other inputs at VCC or GND.
4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.
5. Values for these conditions are examples of the Icc formula. These limits are guaranteed but not tested.
6. IC =IQUIESCENT + IINPUTS + IDYNAMIC
IC = ICC + DICC DHNT + ICCD (fCP/2 + fINI)
ICC = Quiescent Current
ΔICC = Power Supply Current for a TTL High Input (VIN = 3.4V)
DH = Duty Cycle for TTL Inputs High
NT = Number of TTL Inputs at DH
ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL)
fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices)
fI = Input Frequency
NI = Number of Inputs at fI
All currents are in milliamps and all frequencies are in megahertz.
PS2012E
08/08/06
06-0207
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PI74FCT245T
PI74FCT2245T(25OhmSeries)
OctalBidirectionalTransceivers
SwitchingCharacteristicsoverOperatingRange
245T/2245T 245AT/2245AT 245CT/2245CT
Com. Com. Com.
245DT
Com.
(1)
Parameters Description
Conditions
Min.
Max.
Min.
Max.
Min.
Max.
Min
Max. Unit
(1)
(1)
(1)
(1)
t
t
t
t
t
t
t
t
t
t
Propagation Delay
A to B, B to A
Output Enable Time
OE to A or B
Output Disable Time
OE to A or B
Output Enable Time
T/R to A or B
C = 50 pF
R =500-ohm
L
1.5
7.0
1.5
4.6
1.5
4.1
1.5
3.8
5.0
4.3
5.0
4.3
ns
ns
ns
ns
ns
PLH
PHL
PZH
PZL
PHZ
PLZ
PZH
PZL
PHZ
PLZ
L
(2)
1.5
9.0
7.5
9.0
7.5
1.5
6.2
5.0
6.2
5.0
1.5
5.8
4.8
5.8
4.8
1.5
(2)
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
(2)
(2)
Output Disable Time
T/R to A or B
Notes:
1. Minimum limits are guaranteed but not tested on Propagation Delays.
2. This parameter is guaranteed but not production tested.
PackagingMechanical:20-pinSOIC(S)
20
7.40
7.60
.2914
.2992
0.254
0.737
.010
.029
x 45˚
1
.496
.511
12.60
12.99
.0091
.0125
0.23
0.32
0-8˚
0.41
1.27
.016
.050
.020 0.508
.030 0.762
REF
2.35
2.65
.0926
.1043
.394
.419
10.00
10.65
SEATING
PLANE
0.10
0.30
.0040
.0118
.050
BSC
1.27
.013
.020
0.33
0.51
X.XX
DENOTES CONTROLLING
X.XX
DIMENSIONS IN MILLIMETERS
PS2012E
08/08/06
06-0207
4
PI74FCT245T
PI74FCT2245T(25OhmSeries)
OctalBidirectionalTransceivers
PackagingMechanical:20-PinTSSOP(L)
20
.169
.177
4.3
4.5
1
.252
.260
0.09
0.20
.004
.008
6.4
6.6
.047
1.20
Max
0.45 .018
0.75 .030
SEATING
PLANE
.238
.269
6.1
6.7
.002
.006
0.05
0.15
.007
.012
0.19
0.30
.0256
BSC
0.65
PackagingMechanical:20-pinQSOP(Q)
20
.008
0.20
MIN.
.008
.013
0.20
0.33
.150
.157
3.81
3.99
Guage Plane
0˚-6˚
.010
.016
.035
0.41
0.89
0.254
1
Detail A
.337 8.56
.344 8.74
.041
1.04
REF
.015 x 45˚
0.38
.058
1.47
REF
.053 1.35
.069 1.75
Detail A
0.178
0.254
.007
.010
SEATING
PLANE
.016 0.41
.050 1.27
.004 0.101
.010 0.254
.025
BSC
0.635
.228
.244
.008
.012
0.203
0.305
5.79
6.19
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
PS2012E
08/08/06
06-0207
5
PI74FCT245T
PI74FCT2245T(25OhmSeries)
OctalBidirectionalTransceivers
PackagingMechanical:20-PinSSOP(H)
20
5.00
5.60
.197
.220
1
0.09
0.25
.004
.009
.272
.295
6.90
7.50
.022
.037
0.55
0.95
.078
2.00
Max
.291
.322
7.40
8.20
SEATING
PLANE
.002
0.050
Min
.0098
Max.
0.25
.0256
BSC
0.65
PI74FCT245TOrderingInformation
OrderingCode
PI74FCT245TQ
PackageCode
SpeedGrade
PackageType
20-pinQSOP
Q
Q
S
Blank
Blank
Blank
Blank
A
PI74FCT245TQE
PI74FCT245TS
Pb-free&Green,20-pinQSOP
20-pinSOIC
PI74FCT245TSE
PI74FCT245ATLE
PI74FCT245ATS
PI74FCT245ATSE
PI74FCT245ATQ
PI74FCT245ATQE
PI74FCT245CTH
PI74FCT245CTHE
PI74FCT245CTS
PI74FCT245CTSE
PI74FCT245CTQ
PI74FCT245CTQE
PI74FCT245DTQ
PI74FCT245DTQE
S
Pb-free&Green,20-pinSOIC
Pb-free&Green,20-pinTSSOP
20-pinSOIC
L
S
A
S
A
Pb-free&Green,20-pinSOIC
20-pinQSOP
Q
Q
H
H
S
A
A
Pb-free&Green,20-pinQSOP
20-pinSSOP
C
C
Pb-free&Green,20-pinSSOP
20-pinSOIC
C
S
C
Pb-free&Green,20-pinSOIC
20-pinQSOP
Q
Q
Q
Q
C
C
Pb-free&Green,20-pinQSOP
20-pinQSOP
D
D
Pb-free&Green,20-pinQSOP
PS2012E
08/08/06
06-0207
6
PI74FCT245T
PI74FCT2245T(25OhmSeries)
OctalBidirectionalTransceivers
PI74FCT2245TOrderingInformation
OrderingCode
PI74FCT2245TQ
PI74FCT2245TQE
PI74FCT2245TS
PackageCode
SpeedGrade
PackageType
Q
Q
S
Blank
Blank
Blank
Blank
A
20-pinQSOP
Pb-free&Green, 20-pinQSOP
20-pinSOIC
PI74FCT2245TSE
PI74FCT2245ATS
PI74FCT2245ATSE
PI74FCT2245ATQ
PI74FCT2245ATQE
PI74FCT2245CTL
PI74FCT2245CTLE
PI74FCT2245CTQ
PI74FCT2245CTQE
PI74FCT2245DTSE
S
Pb-free&Green, 20-pinSOIC
20-pinSOIC
S
S
A
Pb-free&Green, 20-pinSOIC
20-pinQSOP
Q
Q
L
L
Q
Q
S
A
A
Pb-free&Green, 20-pinQSOP
20-pinTSSOP
C
C
Pb-free&Green, 20-pinTSSOP
20-pinQSOP
C
C
Pb-free&Green, 20-pinQSOP
Pb-free&Green, 20-pinSOIC
D
Notes:
•
•
•
Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
E = Pb-free & Green
Adding an X suffix = Tape/Reel
PericomSemiconductorCorporation •1-800-435-2336 • www.pericom.com
PS2012E
08/08/06
06-0207
7
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