PI3B3861
3.3V, 10-Bit, 2-Port, NanoSwitch™
Features
Description
•
•
•
•
Near-Zero propagation delay
5-ohm switches connect inputs to outputs
Fast Switching Speed: 4.5ns (max.)
Ultra Low Quiescent Power (0.1μA typical)
– Ideally suited for notebook applications
• Packaging (Pb-free & Green available):
– 24-pin 173-mil wide plastic TSSOP (L)
– 24-pin 150-mil wide plastic QSOP (Q)
Pericom Semiconductor’s PI3B3861 is a 10-bit, 3.3 volt, 2-port
bus switch designed with a low On-Resistance (5-ohm) 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.
Block Diagram
Pin Configuration
A0
SW
B0
A9
SW
B9
NC
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
GND
SW
BE
A
B
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
Vcc
BE
B0
B1
B2
B3
B4
B5
B6
B7
B8
B9
BE
Truth Table(1)
Function
Disconnect
Connect
Pin Description
BE
H
L
A0–9
Hi-Z
B0–9
Pin Name
BE
A0 – 9
B0–9
GND
VCC
Notes: 1. H = High Voltage Level
L = Low Voltage Level
Hi-Z = High Impedance
07-0168
1
Description
Bus Enable Input (Active LOW)
Bus A
Bus B
Ground
Power
PS8148G
07/13/07
PI3B3861
3.3V, 10-Bit, 2-Port, NanoSwitch™
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature ............................................................... –65°C to +150°C
Ambient Temperature with Power Applied .............................. –40°C to +85°C
Supply Voltage to Ground Potential .......................................... –0.5V to +4.6V
DC Input Voltage ....................................................................... –0.5V to +4.6V
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 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.
DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 3.3V ±10%)
Parameters Description
Test Conditions(1)
Min.
VIH
Input HIGH Voltage
Guaranteed Logic HIGH Level
2.0
VIL
Input LOW Voltage
Guaranteed Logic LOW Level
–0.5
IIH
Input HIGH Current
IIL
Input LOW Current
IOZH
High Impedance Output Current 0 ≤ A, B ≤ VCC
VIK
Clamp Diode Voltage
VCC = Min., IIN = –18mA
RON
Switch On Resistance(3)
VCC = Min., VIN = 0.0V, ION = 48mA or 64mA
VCC = Min, VIN = 2.4V, ION = 15mA
Typ.(2)
Max.
Units
V
0.8
V
VCC = Max., VIN = VCC
±1
μA
VCC = Max., VIN = GND
±1
μA
±1
μA
–1.2
V
8
17
Ω
5
10
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 = 3.3V, TA = 25°C ambient and maximum loading.
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.
Capacitance (TA = 25°C, f = 1 MHz)
Parameters(1)
Description
Test Conditions
Typ.
Units
CIN
COFF
Input Capacitance
A/B Capacitance, Switch Off
VIN = 0V
VIN = 0V
3.0
8.0
pF
pF
CON
A/B Capacitance, Switch On
VIN = 0V
16.0
pF
Notes:
1. This parameter is determined by device characterization but is not production tested.
07-0168
2
PS8148G
07/13/07
PI3B3861
3.3V,
10-Bit,
2-Port,
NanoSwitch™
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
Power Supply Characteristics
Test Conditions(1)
Parameters Description
Min.
ICC
Quiescent Power
Supply Current
VCC = Max.
VIN = GND or VCC
ΔICC
Supply Current per
Input @ TTL HIGH
VCC = Max.
VIN = 3.0V(3)
Typ(2)
Max.
Units
0.1
3.0
μA
750
μA
Notes:
1. For Max. or Min.conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at VCC = 3.3V, +25°C ambient.
3. Per TTL driven input (control input only); A and B pins do not contribute to ICC.
Switching Characteristics over Operating Range
Parame te rs
De s cription
Com.
Conditions (1)
Units
M in.
M a x.
tPLH
tPHL
Propagation Delay(2,3)
Ax to Bx, Bx to Ax
CL = 50pF, RL = 500Ω
tPZH
tPZL
Bus Enable Time
BE to Ax or Bx
CL = 50pF, RL = 500Ω
1
4.5
tPHZ
tPLZ
Bus Disable Time
BE to Ax or Bx
CL = 50pF, RL = 500Ω
1
4.5
0.25
ns
Notes:
1. See test circuit and waveforms.
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 0.25ns for 50pF 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.
Applications Information
Logic Inputs
The logic control inputs can be driven up to +3.6V regardless of the supply voltage. For example, given a + 3.3V supply, IN may be
driven low to 0V and high to 3.6V. Driving IN Rail-to-Rail® minimizes power consumption.
Power-Supply Sequencing and Hot-Plug Information
Proper power-supply sequencing is recommended for all CMOS devices. Always apply VCC and GND before applying signals to
input/output or control pins.
Rail-to-Rail is a registeredtrademark of Nippon Motorola, Ltd.
07-0168
3
PS8148G
07/13/07
PI3B3861
3.3V, 10-Bit, 2-Port, NanoSwitch™
Test Circuit
Switch Position
6V
VCC
Open
500Ω
VIN
VOUT
Pulse
Generator
50pF
500Ω
CL
Enable and Disable Timing
Enable
Propagation Delay
Disable
Same Phase
Input Transisiton
3V
1.5V
Control
Input
tPZL
0V
tPLH
tPHL
tPLZ
3V
3V
Switch
Output
1.5V
0.3V
tPZH
Output
Normally
High
3V
1.5V
1.5V
1.5V
0V
Output
Normally
Low
Switch
6V
6V
GND
GND
Open
Definitions:
CL = Load capacitance (includes jig and
probe capacitance)
RT = Termination resistance (should be
equal to ZOUT of the pulse generator)
D.U.T.
RT
Test
Disable LOW
Enable LOW
Disable HIGH
Enable HIGH
tPD
VOL
VOL
tPLH
tPZH
Switch
GND
1.5V
0.3V
0V
VOH
1.5V
1.5V
tPHL
3V
VOH
Opposite Phase
Input Transisiton
1.5V
0V
0V
1. Input Control Enable = Low; Input Control Disable = High
2. Pulse Generator for all pulses:
Rate
很抱歉,暂时无法提供与“PI3B3861LEX”相匹配的价格&库存,您可以联系我们找货
免费人工找货