PI5C3861 [PERICOM]
10-Bit, 2-Port Bus Switch; 10位， 2端口总线开关
| 型号： | PI5C3861 |
| 厂家： | 
PERICOM SEMICONDUCTOR CORPORATION |
| 描述： | 10-Bit, 2-Port Bus Switch |
| 文件： | 总4页 (文件大小：40K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PI5C3861
10-Bit, 2-Port Bus Switch
ProductFeatures:
• Near zero propagation delay
ProductDescription:
PericomSemiconductor’sPI5Cseriesoflogiccircuitsareproduced
in the Company’s advanced submicron CMOS technology,
achieving industry leading performance.
• 5-ohm switches connect inputs to outputs
•
•
Direct bus connection when switches are ON
ThePI5C3861isa10-bit,2-portbusswitchdesignedwithalowON
resistance (5-ohm) allowing inputs to be connected directly to
outputs. The bus switch creates no additional propagation delay or
additional ground bounce noise. The switches are turned ON by the
Bus Enable (BE) input signal.
UltraLowQuiescentPower(0.2µATypical)
– Ideally suited for notebook applications
• Package:24-pin,150-milwideplasticQSOP(Q)
Pb-freeavailable
ProductPinConfiguration
Logic Block Diagram
1
24
23
22
21
20
19
18
17
16
15
14
13
NC
VCC
EN
2
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A
A
0
9
B
B
0
9
3
B
B
B
B
B
B
B
B
B
B
0
1
2
3
4
5
6
7
8
9
4
24-Pin
Q
5
6
7
8
9
10
11
12
GND
EN
Product Pin Description
Pin Name
BE
Description
Bus Enable Input (Active LOW)
A0–9
B0–9
GND
VCC
Bus A
Bus B
Ground
Power
Truth Table(1)
Function
BE
H
A0–9
Hi-Z
B0–9
Disconnect
Connect
L
NOTE: 1. H = High Voltage Level
L = Low Voltage Level
Hi-Z = High Impedance
PS7021E
06/16/04
1
PI5C3861
10-Bit,2-PortBusSwitch
MaximumRatings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature .................................................................... –55°Cto+125°C
Ambient Temperature with Power Applied ....................................–40°Cto+85°C
Supply Voltage to Ground Potential ............................................... –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
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 condi-
tionsabovethoseindicatedintheoperationalsections
of this specification is not implied. Exposure to
absolute maximum rating conditions for extended
periods may affect reliability.
DCElectricalCharacteristics(OvertheOperatingRange, TA = –40°Cto+85°C, VCC =5V±5%)
Parameters Description
TestConditions(1)
Min.
2.0
Typ(2) Max.
Units
V
VIH
VIL
IIH
InputHIGHVoltage
GuaranteedLogicHIGHLevel
GuaranteedLogicLOWLevel
VCC =Max.,VIN =VCC
VCC =Max.,VIN =GND
0 - A, B - VCC
Input LOW Voltage
–0.5
0.8
±1
±1
±1
V
InputHIGHCurrent
µA
µA
µA
IIL
Input LOW Current
IOZH
VIK
IOS
VH
High Impedance Output Current
ClampDiodeVoltage
VCC =Min., IIN = –18mA
A(B)=0V,B(A)=VCC
–0.7
100
–1.2
150
V
Short Circuit Current(3)
Input Hysteresis at Control Pins
Switch On Resistance(4)
mA
mV
RON
VCC =Min.,VIN =0.0V, ION = 48 mA
VCC =Min.,VIN =2.4V, ION = 15 mA
5
7
ohm
10
15
Capacitance (TA = 25°C, f = 1 MHz)
Parameters(5)
Description
Test Conditions
Typ
Max.
Units
CIN
Input Capacitance
VIN = 0V
VIN = 0V
6
6
pF
pF
COFF
A/B Capacitance, Switch Off
CON
A/B Capacitance, Switch On
VIN = 0V
8
pF
Notes:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the
applicable device type.
2. TypicalvaluesareatVcc=5.0V, TA =25°Cambientandmaximumloading.
3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
4. 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.
5. This parameter is determined by device characterization but is not production tested.
PS7021E
06/16/04
2
PI5C3861
10-Bit,2-PortBusSwitch
PowerSupplyCharacteristics
Parameters Description
TestConditions(1)
Min. Typ(2) Max.
Units
ICC
Quiescent Power
Supply Current
VCC=Max.
VCC =Max.
VCC =Max.,
VIN =GNDorVCC
0.1
10
µA
ÐICC
ICCD
Supply Current per
Input@TTLHIGH
VIN =3.4V(3)
2.5
mA
Supply Current per
Input per MHz(4)
0.25
mA/
MHz
A and B Pins Open
BE=GND
Control Input Toggling
50%DutyCycle
Notes:
1. For conditions shown as Max. or Min., 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, control inputs only); A and B pins do not contribute to Icc.
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.
Switching Characteristics over Operating Range
PI5C3861
Com.
Parameters Description
Conditions(1)
Min
Max
Unit
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Propagation Delay(2,3)
CL = 50 pF
RL = 500-ohm
0.25
ns
Ax to Bx, Bx to Ax
Bus Enable Time
BE to Ax or Bx
Bus Disable Time
BE to Ax or Bx
1.5
1.5
6.5
5.5
ns
ns
Notes:
1. See test circuit and wave forms.
2. This parameter is guaranteed but not tested on Propagation Delays.
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.
PS7021E
06/16/04
3
PI5C3861
10-Bit,2-PortBusSwitch
Packaging Mechanical: 24-pin QSOP (package code Q)
24
.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
Detail A
1
.041
1.04
REF
.337 8.56
.344 8.74
.015 x 45˚
0.38
.033
0.84
.053 1.35
.069 1.75
Detail A
0.178
0.254
.007
.010
SEATING
PLANE
.016 0.406
.050 1.27
0.101
0.254
.004
.010
.025
typical
.228
.244
0.203
0.305
.008
.012
0.635
5.79
6.20
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
OrderingInformation
Ordering Code
PI5C3861Q
Packaging Code
Package Type
Q
Q
24-pin 150-mil wide plastic QSOP
PI5C3861QE
Pb-free, 24-pin 150-mil wide plastic QSOP
Notes:
1. Thermal characteristics can be found on the company web site at http://www.pericom.com/packaging/mechanicals.php
PericomSemiconductorCorporation
2380BeringDrive • SanJose,CA95131•1-800-435-2336 • Fax(408)435-1100• http://www.pericom.com
PS7021E
06/16/04
4
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