PI5C3861CDLE [PERICOM]
Bus Driver, CBT/FST/QS/5C/B Series, 1-Func, 10-Bit, True Output, CMOS, PDSO24, 0.173 INCH, PLASTIC, TSSOP-24;
| 型号： | PI5C3861CDLE |
| 厂家： | 
PERICOM SEMICONDUCTOR CORPORATION |
| 描述： | Bus Driver, CBT/FST/QS/5C/B Series, 1-Func, 10-Bit, True Output, CMOS, PDSO24, 0.173 INCH, PLASTIC, TSSOP-24 驱动 光电二极管 逻辑集成电路 |
| 文件： | 总5页 (文件大小：252K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TARGET SPECIFICATION
PI5C3861CD
10-Bit, 2-Port BusSwitch with
Dual Side Undershoot Protection
ProductFeatures
ProductDescription
Near zero propagation delay
PericomSemiconductorsPI5Cseriesof logiccircuitsareproduced
using the Companys advanced submicron CMOS technology,
achieving industry leading performance.
5 Ohm switches connect inputs to outputs
Direct bus connection when switches are ON
Undershoot protection to 2V (data inputs only)
The PI5C3861CD is a 10-bit, 2-port bus switch with dual side
undershoot protection designed with a low ON resistance (5 ohms)
allowing inputs to be connected directly to outputs. The bus switch
creates no additional propagational delay or additional ground
bounce noise. The switches are turned ON by the Bus Enable (BE)
input signal. When the switch is disabled, the A and B ports can
handle up to 2V undershoot.
Packagesavailable:
24-pin150milwideplasticQSOP(Q)
24-pin173milwideplasticTSSOP(L)
ProductPinConfiguration
LogicBlockDiagram
NC
A0
1
24
23
22
21
20
19
18
17
16
15
14
13
Vcc
BE
B0
B1
B2
B3
B4
B5
B6
B7
B8
B9
A
A
0
9
B
B
0
9
2
3
A1
4
A2
5
A3
24-Pin
Q, L
6
A4
7
A5
8
A6
9
A7
10
11
12
A8
A9
GND
BE
TruthTable(1)
Function
ProductPinDescription
BE
H
A09
Hi-Z
B09
Pin Name
Description
Disconnect
Connect
BE
Bus Enable Input (Active LOW)
L
A09
B09
GND
Bus A
Bus B
Ground
Power
Note: 1. H=HighVoltageLevel
L=LowVoltageLevel
Hi-Z=HighImpedance
V
CC
PXXXX
02/26/01
1
TARGET SPECIFICATION
PI5C3861CD
10-Bit,2-PortBusSwitchwith
DualSideUndershootProtection
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
Supply Voltage to Ground Potential (Inputs & Vcc Only) .......0.5Vto+7.0V
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
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
maximumratingconditionsforextendedperiodsmay
affectreliability.
DCElectricalCharacteristics(OvertheOperatingRange, T =40°Cto+85°C, V =5V±5%)
A
CC
(1)
(2)
Parameters Description
TestConditions
Min. Typ
Max.
Units
V
V
IH
InputHIGHVoltage
GuaranteedLogicHIGHLevel
GuaranteedLogicLOWLevel
2.0
0.5
V
IL
Input LOW Voltage
0.8
V
I
I
I
InputHIGHCurrent
V
V
=Max.,V =V
CC
±10
±10
±10
1.8
2.0
µA
µA
µA
V
IH
CC
IN
Input LOW Current
=Max.,V =GND
IL
CC
IN
High Impedance Output Current
ClampDiodeVoltage
Undershoot Protection
0 A, B V
OZH
CC
V
V
=Min., I =18 mA
IK
CC
IN
V
Max Inputs, No Contention, Undershoot
Pulse Duration <25ns
V
UP
(4,5)
Voltage
(3)
R
ON
Switch On Resistance
V
V
=Min.,V =0.0V, I =48 mA
5
10
7
15
Ω
CC
IN
ON
=Min.,V =2.4V, I = 15 mA
CC
IN
ON
Capacitance(T =25°C,f=1MHz)
A
(4)
Parameters
Description
TestConditions
Typ
Max.
Units
C
C
Input Capacitance
V
V
= 0V
= 0V
6
6
pF
pF
IN
IN
A/BCapacitance, SwitchOff
OFF
IN
C
ON
A/B Capacitance, Switch On
V
IN
= 0V
8
pF
Notes:
1. For Max. or Min.conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. TypicalvaluesareatV =5.0V,T =25°Cambientandmaximumloading.
CC
A
3. Measured by the voltage drop between A and B pin at indicated current through the switch. ON resistance is determined
by the lower of the voltages on the two (A,B) pins.
4. This parameter is determined by device characterization but is not production tested.
5. See Parameter Measurements for description of characterization method.
PXXXX
02/26/01
2
TARGET SPECIFICATION
PI5C3861CD
10-Bit,2-PortBusSwitchwith
DualSideUndershootProtection
PowerSupplyCharacteristics
1
2
Parameters
Description
Test Conditions(1)
Min. Typ(2) Max. Units
ICC
Quiescent Power Supply Current
VIN = GND or VCC
VIN = 3.4V(3)
100
2.5
µA
VCC = Max.
∆ICC
Supply Current per Input @ TTL HIGH
mA
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. TypicalvaluesareatV =5.0V,+25°Cambient.
CC
3
3. Per TTL driven input (V = 3.4V, control inputs only); A and B pins do not contribute to Icc.
IN
4. This current applies to the control inputs only and represent the current required to switch internal capacitance at the specified
frequency. The A and B inputs generate no significant AC or DC currents as they transition. This parameter is not tested, but is
guaranteed by design.
4
5
SwitchingCharacteristicsoverOperatingRange
PI3C3861D
Parameters
Description
Conditions(1)
Units
Com.
Min.
Max.
tPLH
tPHL
Propogation Delay(2,3), Ax to Bx, Bx to Ax
Bus Enable Time, BE to Ax or Bx
Bus Disable Time, BE to Ax or Bx
0.25
6
tPZH
tPZL
CL = 50pF
RL = 500Ω
1.5
1.5
6.5
5.5
ns
tPHZ
tPLZ
7
Notes:
1. See test circuit and wave forms.
2. This parameter is guaranteed but not tested on Propagation Delays.
8
3. The bus switch contributes no propagational delay other than the RC delay of the ON resistance of the switch and the load
capacitance. The time constant for the switch alone is of the order of 0.25 ns for 50 pF load. Since this time constant is much
smaller than the rise/fall times of typical driving signals, it adds very little propagational delay to the system. Propagational delay
of the bus switch when used in a system is determined by the driving circuit on the driving side of the switch and its interaction
with the load on the driven side.
9
10
11
12
13
14
15
ParameterMeasurements
2xV
DD
V
IN
V
OUT
R
R
1
>2.4V
0V
V
OUT
V
IN
Pulse
Generator
D.U.T.
–2V
20pF
2
25ns
V
IN
R
1
= R = 10k
2
Undershoot Test Circuit
Undershoot Test Waveforms
PXXXX
02/26/01
3
TARGET SPECIFICATION
PI5C3861CD
10-Bit,2-PortBusSwitchwith
DualSideUndershootProtection
ApplicationsInformation
Logic Inputs
The logic control inputs can be driven up to +5.5V regardless of the supply voltage. For example, given a 5.0V supply, the control or
select pins may be driven low to 0V and high to 5.5V. Driving the control or select pins Rail-to-Rail minimizes power consumption.
Power -Supply Sequencing
Proper power-supply sequencing is recommended for all CMOS devices. Always apply VCC before applying signals to the input/
output or control pins.
Hot Insertion
For Datacom and Telecom applications that have 10 or more volts passing through the backplane,
a high voltage from the power supply may be seen at the device input pins during Hot Insertion. The PI5Cxxxx devices have maximum
limits of 7V and 120mA for 20ns. If the power is higher or applied for a longer period of time or repeatedly reaches the maximum limits
the devices can be damaged.
For additional design guidance, please refer to the following application material:
1. Design Guidelines for the PI5Cxxx in Hot Insertion Applications.
2. PI5C6800 bus switch in PCI Hot Plus Applications.
Application Notes and Briefs can be found at www.pericom.com.
OrderingInformation
P/N
Package
Width
173-mil
150-mil
PI5C3861CDL
PI5C3861CDQ
24 - TSSOP (L)
24 - QSOP (Q)
PXXXX
02/26/01
4
TARGET SPECIFICATION
PI5C3861CD
10-Bit,2-PortBusSwitchwith
DualSideUndershootProtection
24-PinTSSOPPackage(L)
1
2
24
.169
.177
4.3
4.5
3
1
.303
.311
7.7
7.9
0.09
0.20
.004
.008
.047
1.20
Max
4
5
0.45 .018
0.75 .030
SEATING
PLANE
.252
BSC
6.4
.002
.006
0.05
0.15
.0256
BSC
.007
.012
0.19
0.30
0.65
6
X.XX DENOTES CONTROLLING
X.XX DIMENSIONS IN MILLIMETERS
7
24-PinQSOPPackage(Q)
8
24
9
.150
.157
3.81
3.99
.015 x 45˚
0.38
10
11
12
13
14
15
1
0.178
0.254
.007
.010
.337 8.56
.344 8.74
.016 0.406
.050 1.27
.033
0.84
.053 1.35
.069 1.75
.228
.244
5.79
6.20
SEATING
PLANE
0.101
0.254
.004
.010
.025
typical
0.203
0.305
.008
.012
0.635
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
Pericom Semiconductor Corporation
2380BeringDrive • SanJose,CA95131•1-800-435-2336 • Fax(408)435-1100• http://www.pericom.com
PXXXX
02/26/01
5
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