PI5C3861 - Pericom

PI5C3861
10-Bit, 2-Port Bus Switch
Features:
Description:
• Near-Zero propagation delay
• 5Ω switches connect inputs to outputs
• Direct bus connection when switches are ON
• Ultra Low Quiescent Power (0.2μA typical)
– Ideally suited for notebook applications
• Packaging (Pb-free & Green available):
– 24-pin, 150-mil wide plastic QSOP (Q)
Pericom Semiconductor’s PI5C3861 is a 10-bit, 2-port bus switch
designed with a low On-Resistance (5Ω) 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.
Block Diagram
Pin Configuration
A0
B0
A9
B9
NC
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
GND
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
Pin Description
Pin Name
BE
Truth Table(1)
Description
Bus Enable Input (Active LOW)
A0–9
Bus A
BE
A0–9
B0–9
Bus B
Disconnect
H
Hi-Z
GND
Ground
Connect
L
B0–9
VCC
Power
NC
No Connect
Function
Note:
1. H = High Voltage Level, L = Low Voltage Level,
Hi-Z = High Impedance
07-0125
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PS7021H
05/02/07
PI5C3861
10-Bit, 2-Port Bus Switch
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature .................................................................. –55°C to +125°C
Ambient Temperature with Power Applied ................................. –40°C to +85°C
Supply Voltage to Ground Potential ............................................. –0.5V to +7.0V
DC Input Voltage .......................................................................... –0.5V to +7.0V
DC Output Current.....................................................................................120 mA
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 = 5V ±5%)
Parameters
Test Conditions(1)
Description
Min.
Typ(2)
Max.
VIH
Input HIGH Voltage
Guaranteed Logic HIGH Level
2.0
VIL
Input LOW Voltage
Guaranteed Logic LOW Level
–0.5
IIH
Input HIGH Current
VCC = Max., VIN = VCC
±1
IIL
Input LOW Current
VCC = Max., VIN = GND
±1
IOZ
High Impedance Output Current
0 ≤ A, B ≤ VCC
±1
VIK
Clamp Diode Voltage
VCC = Min., IIN = –18mA
IOS
SHORT CIRCUIT CURRENT(3)
A (B) = 0V, B (A) = VCC
VH
Input Hysteresis at Control Pins
RON
Switch On-Resistance(4)
Units
V
0.8
–0.7
μA
–1.2
100
V
MA
150
mV
VCC = Min., VIN = 0.0V, ION = 48mA
5
7
VCC = Min., VIN = 2.4V, ION = 15mA
10
15
Ω
Notes:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 5.0V, TA = 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.
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.
Capacitance (TA = 25°C, f = 1 MHz)
Parameters(1)
CIN
Description
Test Conditions
Input Capacitance
COFF
A/B Capacitance, Switch Off
CON
A/B Capacitance, Switch On
Typ.
Max.
Units
6
VIN = 0V
6
pF
8
Notes:
1. This parameter is determined by device characterization but is not production tested.
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PI5C3861
10-Bit, 2-Port Bus Switch
Power Supply Characteristics
Parameters
ICC
ΔICC
ICCD
Test Conditions(1)
Description
Quiescent Power
Supply Current
VCC = Max.
VIN = GND or VCC
Supply Current per
Input @ TTL HIGH
VCC = Max.
VIN = 3.4V(3)
Supply Current per
Input per MHz(4)
VCC = Max.,
A and B Pins Open
BE =
Control Input Toggling
50% Duty Cycle
Min.
Typ(2)
Max.
Units
0.1
10
μA
2.5
mA
0.25
mA/
MHz
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
Parameters
Description
Com.
Conditions
Min.
tPLH
tPHL
Propagation Delay(1,2)
Ax to Bx, Bx to Ax
tPZH
tPZL
Bus Enable Time
BE to Ax or Bx
tPHZ
tPLZ
Bus Disable Time
BE to Ax or Bx
Unit
Max.
0.25
CL = 50pF
RL = 500Ω
1.5
6.5
1.5
5.5
ns
Notes:
1. This parameter is guaranteed but not tested on Propagation Delays.
2. 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.
07-0125
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PS7021H
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PI5C3861
10-Bit, 2-Port Bus Switch
Packaging Mechanical: 24-pin QSOP (Q)
24
.008
0.20
MIN.
.150
.157
.008
.013
0.20
0.33
3.81
3.99
Guage Plane
.010
0.254
.016
.035
0.41
0.89
Detail A
1
.337
.344
.041
1.04
REF
8.56
8.74
.033
0.84
0˚-6˚
.053
.069
.015 x 45˚
0.38
1.35
1.75
Detail A
.007
.010
SEATING
PLANE
.025
typical
0.635
0.406
1.27
.016
.050
.004 0.101
.010 0.254
.008 0.203
.012 0.305
0.178
0.254
.228
.244
5.79
6.20
X.XX DENOTES DIMENSIONS
X.XX IN MILLIMETERS
Ordering Information
Ordering Code
Package Code
Package Description
PI5C3861Q
Q
24-pin 150-mil wide plastic QSOP
PI5C3861QE
Q
Pb-free & Green, 24-pin 150-mil wide plastic QSOP
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
Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com
07-0125
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PS7021H
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