PI74LVTC16245AX [PERICOM]
Bus Transceiver, LVT Series, 2-Func, 8-Bit, True Output, CMOS, PDSO48, 0.240 INCH, PLASTIC, TSSOP-48;
| 型号： | PI74LVTC16245AX |
| 厂家： | 
PERICOM SEMICONDUCTOR CORPORATION |
| 描述： | Bus Transceiver, LVT Series, 2-Func, 8-Bit, True Output, CMOS, PDSO48, 0.240 INCH, PLASTIC, TSSOP-48 光电二极管 逻辑集成电路 |
| 文件： | 总7页 (文件大小：314K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PI74LVTC16245
3.3V 16-Bit Bi-Directional Transceiver
with 3-State Outputs
ProductFeatures
ProductDescription
ThePI74LVTC16245isanon-inverting16-bitBidirectionalTrans-
ceiverdesignedforlow-voltage2.7Vto3.6VV operation,withthe
• Advanced low power CMOS design for 2.7V to 3.6V
Vcc operation
CC
• Supports 5V input/output tolerance in mixed signal mode
operation
capability of interfacing to the 5V system environment. This
tranceiver is designed for asynchronous two-way communication
between data buses. The direction control input pin (xDIR) deter-
mines the direction of the data flow through the bidirectional
transceiver.TheDirectionandOutputEnablecontrolsaredesigned
to operate this device as either two independent 8-bit tranceivers
or one 16-bit transceiver. The output enable (xOE) input, when
HIGH, disables both A and B ports by placing them in
HIGHZcondition.
• Function compatible with LVT family of products
• Balanced ±24mA output drive
• TypicalVOLP (OutputGroundBounce)<0.8VatV =3.3V,
CC
TA=25°C
• Ioff and Power Up/Down 3-State support live insertion
• Latch-upperformanceexceeds200mAPerJESD78
• ESDprotectionexceedsJESD22
–2000VHuman-BodyModel(A114-B)
–200VMachineModel(A115-A)
• IndustrialTemperature: –40°Cto+85°C
• Packaging(Pb-free&Greenavailable):
–48-pin240-milwideplasticTSSOP(A)
WhenVccisbetween0to1.5Vduringpoweruporpowerdown,the
outputs of the device are in the high-impedance state. To ensure
the high-impedance state above1.5V, OE should be tied to Vcc
through a pullup resistor; the minimum value of the resistor is
determined by the current sinking capability of the driver.
The device fully supports live-insertion with its Ioff and power-up/
down3-state. TheIoffcircuitrydisablestheoutputswhenthepower
is off, preventing the backflow of damaging current through the
device. Power-up/down 3-state places the outputs in the
high-impedance state during power up or power down, preventing
driverconflict.
LogicBlockDiagram
1
24
1DIR
2DIR
48
25
1
OE
2
OE
47
46
44
43
41
40
38
37
36
35
33
32
30
29
27
26
1A
1A
1A
1A
1A
1A
1A
1A
0
1
2
3
4
5
6
7
2
2
2
2
2
2
2
2
A0
A1
A2
A3
A4
A5
A6
A7
2
3
13
14
16
17
19
20
22
23
1
1
1
1
1
1
1
1
B
B
B
B
B
B
B
B
0
1
2
3
4
5
6
7
2
2
2
2
2
2
2
2
B
B
B
B
B
B
B
B
0
1
2
3
4
5
6
7
5
6
8
9
11
12
PS8651B
06/05/06
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06-0214
PI74LVTC16245
3.3V 16-Bit Bi-Directional Tranceivers
with3-StateOutputs
MaximumRatings
(Above which the useful life may be impaired.
For user guidelines, not tested.)
Product Pin Description
Pin Name
xOE
Description
Supply voltage range, V .............................. –0.5V to+6.5V
CC
Input voltage range, V (1) ................................. –0.5V to+6.5V
3-State Output Enable Inputs (Active LOW)
I
Voltage range applied to any output in the
(ActiveHIGH)
Direction Control Input
xDIR
xAx
high-impedance or power-off state, V (1) ........ –0.5V to+6.5V
O
Side A Inputs or 3-State Outputs
Voltage range applied to any output in the
(1,2)
active state, V
.................................... –0.5VtoV +0.5V
CC
O
xBx
Side B Inputs or 3-State Outputs
Input clamp current, I (V <0)..................................... –50mA
IK
I
GND
VCC
Ground
Power
Output clamp current, I (V <0) ............................... –50mA
OK
O
Continous Output Current I ....................................... ±50mA
O
ContinousCurrentthrougheachVCCorGNDpin .............. ±100mA
(3)
Packagethermalimpedance, θ
...................................... 104°C/W
JA
Storage Temperature range, T ..................... –65°Cto150°C
stg
Product Pin Configuration
1
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
1DIR
1B0
1B1
GND
1B2
1B3
VCC
1B4
1B5
GND
1B6
1B7
2B0
2B1
GND
2B2
2B3
VCC
2B4
2B5
GND
2B6
2B7
2DIR
1OE
1A0
1A1
GND
1A2
1A3
VCC
1A4
1A5
GND
1A6
1A7
2A0
2A1
GND
2A2
2A3
VCC
2A4
2A5
GND
2A6
2A7
2OE
Notes:
2
Stresses greater than those listed under MAXIMUM RATINGS
may cause permanent damage to the device. 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
specificationisnotimplied. Exposuretoabsolutemaximumrating
conditions for extended periods may affect reliability.
3
4
5
6
7
1. Input negative-voltage and output voltage ratings may be ex-
ceeded if the input and output clamp current ratings are observed.
2. Thisvalueislimitedto6.5Vmaximum.
3. Thepackagethermalimpedanceiscalculatedinaccordancewith
JESD51.
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Truth Table(1)
Inputs
Outputs
xOE
L
xDIR
L
H
X
Bus B Data to Bus A
Bus A Data to Bus B
Z
L
H
Notes:
1. H = HighSignalLevel
L = LowSignalLevel
X = Don’t Care or Irrelevant
Z = High Impedance
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PI74LVTC16245
3.3V 16-Bit Bi-Directional Tranceivers
with3-StateOutputs
RecommendedOperatingConditions(1)
Min.
2.7
Max.
Units
VCC Supply Voltage
Operating
3.6
VIH High-level Input Voltage
VIL Low-level Input Voltage
VI Input Voltage
VCC = 2.7V to 3.6V
VCC = 2.7V to 3.6V
2.0
0.8
5.5
VCC
5.5
–12
–24
12
V
0
0
0
High or Low State
3-State
VO Output Voltage
VCC = 2.7V
IOH High-level output current
IOL Low-level output current
VCC = 3.0V to 3.6V
VCC = 2.7V
mA
VCC = 3.0V to 3.6V
24
10
ns/V
μs/V
°C
Δt/Δv Input transition rise or fall rate
Δt/ΔVCC Power-up ramp rate
150
–40
TA
Operating free-air temperature
+85
Notes:
1. All unused inputs must be held at V or GND to ensure proper device operation.
CC
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PI74LVTC16245
3.3V 16-Bit Bi-Directional Tranceivers
with3-StateOutputs
DCElectricalCharacteristics(Over the Operating Range, T = –40°C to +85°C)
A
Parameters
Description
Test Conditions
II = –18mA
Min.
Max. Units
VIK
Clamp Diode Voltage
VCC = 2.7V
–1.2V
VCC = 2.7V to 3.6V
VCC = 2.7V
IOH = –100μA
IOH = –12mA
IOH = –12mA
IOH = –24mA
IOL = 100μA
IOL = 12mA
VCC –0.2V
2.2
2.4
2.2
Output High Voltage
Output Low Voltage
VOH
VCC = 3V
V
VCC = 2.7V to 3.6V
VCC = 2.7V
0.2
0.4
VOL
IOL = 12mA
0.4
VCC = 3V
IOL = 24mA
0.55
Control Inputs
VCC = 0V to 3.6V
VI = 0V to 5.5V
±5
Input Leakage
Current
II
VI = 5.5V
VI = VCC
VI = GND
A or B Ports (1) VCC = 3.6V
±5
±5
Power Off Output Leakage
Current
IOFF
IOZPU
IOZPD
VCC = 0V
VI or VO = 0V to 5.5V
μA
VO = 0.5V to 5.5V,
OE = don't care
Power-Up 3-State Current
VCC = 0V to 1.5V
VCC = 1.5V to 0V
±5
VO = 0.5V to 5.5V,
OE = don't care
Power-Down 3-State Current
±5
60
VI = VCC or GND
ICC
Quiescent Power Supply Current VCC = 2.7V to 3.6V
IO = 0
3.6V ≤ VI ≤ 5.5V(2)
One input at VCC - 0.6V(3)
Other inputs at VCC or GND
,
Increase in ICC
VCC = 2.7V to 3.6V
500
ΔICC
Notes:
1. For I/O ports, Input Leakage Current (I ) includes the 3-state Output Leakage Current. Unused pins are at V or GND.
I
CC
2. This applies in the disabled state only.
3. This is the increase in supply current for each input that is at the specified TTL voltage level rather than V or GND.
CC
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PI74LVTC16245
3.3V 16-Bit Bi-Directional Tranceivers
with3-StateOutputs
Capacitance
Parameters
CI
Description
Control Input Capacitance
Input/Output Capacitance
Test Conditions
VCC = 3.3V, VI = VCC or GND
VCC = 3.3V, VO = VCC or GND
Typ.(1)
3.4
Units
CIO
8
pF
CPD
Power Dissipation Capacitance (2)
VCC = 3.3V, VI = 0V or VCC, f =10 MHz
22
Notes:
1. All typical values are measured at V = 3.3V, T = 25°C.
CC
A
2.
C
is defined as the value of the internal equivalent capacitance which is derived from dynamic operating current consumption
PD
(I
CCD
) at no output loading and operating at 50% duty cycle, C is related to I
dynamic operating current by the
CCD
PD
expression:I
=(C )(V )(f )+(I static).
CCD
PD CC IN CC
SwitchingCharacteristicsOverOperatingRange
V
CC
= 3.3V ±0.3V
V
CC
= 2.7V
From
(Input)
To
(Output)
C = 50pF,
R = 500-ohm
L
C = 50pF,
L
R = 500-ohm
L
L
Parameters
Description
Units
(1)
Min.
1.0
Typ.
Max.
3.5
Min.
Max.
t
2.4
2.4
2.8
3.9
3.9
5.3
PLH
Propagation
Delay
A or B
OE
B or A
A or B
t
1.0
3.5
PHL
t
1.0
4.9
PZH
Output Enable
Time
t
1.0
1.0
1.0
2.7
2.7
2.5
4.9
4.3
4.3
5.3
4.8
4.8
PZL
ns
t
PHZ
Output Disable
Time
OE
A or B
t
PLZ
Output to
Output Skew
t
0.5
SK(O)
(2)
Notes:
1. All typical values are measured at V = 3.3V, T = 25°C.
CC
A
2. Skew between any two outputs, switching in the same direction.
PS8651B
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PI74LVTC16245
3.3V 16-Bit Bi-Directional Tranceivers
with3-StateOutputs
PARAMETERMEASUREMENTINFORMATION
VCC = 2.7V and 3.3V ±0.3V
6V
S1
Open
GND
500Ω
From Output
Under Test
Test
/t
S1
t
t
Open
6V
PLH PHL
C
= 50pF
(SLee Note A)
500Ω
/t
PLZ PZL
t
/t
GND
PHZ PZH
LoadCircuit
tW
2.7V
1.5V
1.5V
Input
0V
VoltageWaveforms
PulseDuration
Output
Control
(Low Level
Enabling)
2.7V
1.5V
1.5V
0V
3V
2.7V
0V
t
t
PZL
PLZ
+0.3V
Output
Waveform 1
S1 at 6V
1.5V
tPLH
1.5V
tPHL
Input
1.5V
V
OL
(see Note B)
V
V
OL
t
t
PZH
PHZ
V
OH
OL
OH
1.5V
V
-0.3V
OH
1.5V
1.5V
Output
Waveform 2
S1 at GND
Output
V
0V
(see Note B)
VoltageWaveforms
PropagationDelayTimes
VoltageWaveforms
Enable and Disable Times
Figure1.LoadCircuitandVoltageWaveforms
Notes:
A. CL includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
•
•
All input impulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50Ω, tR ≤ 2.5ns, tF ≤ 2.5ns.
The outputs are measured one at a time with one transition per measurement.
PS8651B
06/05/06
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PI74LVTC16245
3.3V 16-Bit Bi-Directional Tranceivers
with3-StateOutputs
48-pin TSSOP (A) Package
48
.236
.244
6.0
6.2
1
.488 12.4
.496 12.6
.047
1.20 Max
SEATING PLANE
0.09
0.20
.004
.008
0.45 .018
0.75 .030
.002
.006
0.05
0.15
.007
.010
.0197
BSC
.319
BSC
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
0.50
0.17
0.27
8.1
OrderingInformation
Ordering Code
PI74LVTC16245A
Package Code
Package Type
A
A
48-pin, 240-mil wide plastic TSSOP (A)
Pb-free, 48-pin, 240-mil wide plastic TSSOP (A)
PI74LVTC16245AE
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
PS8651B
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