ETC PI3B16292A

PI3B16292
Ω)
PI3B162292 (25Ω
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3.3Volt, 24-Bit
Mux/Demux BusSwitch
Features
Description
•
•
•
•
•
Pericom Semiconductor’s PI3B series of logic circuits are produced
using the Company’s advanced 0.35 micron CMOS technology.
•
•
•
•
Near-zero propagation delay
5Ω switches connect inputs to outputs
Fast Switching Speed - 5ns (max.)(16292)
Internal 500Ω pull-down on A2 ports
Ultra-low quiescent power (0.2µA typical) – Ideally
suited for notebook applications
Vcc Operating Range : 3.0V to 3.6V
Industrial operating temperature: –40°C to +85°C
Make-before-break switching
Packages available:
– 56-pin 240-mil wide thin plastic TSSOP (A)
– 56-pin 300-mil wide plastic SSOP (V)
The PI3B16292 and PI3B162292 are 3.3 volt, 12-bit to 24-bit
Mux/Demux Bus switches designed with a low ON resistance
allowing inputs to be connected directly to outputs.
The PI3B162292 device has a built-in 25-ohm series resistor
to reduce noise resulting from reflections, thus eliminating the
need for an external terminating resistor.
A2 port is not externally connected and, as a result, has an internal
500-ohm pulldown resistor to ground.
Pin Configuration
Applications
S0
• Memory switching
1A1
NC1
2A 1
NC1
3A1
NC1
Logic Block Diagram
GND
4A1
NC1
5A1
NC1
6A1
NC1
Ω
7A1
NC1
VCC
8A1
GND
NC1
9A1
NC1
Truth Table
Function
A1 to B1, A2 to B2
A1 to B2, A2 to B1
S0
L
H
A1
B1
B2
10A1
NC1
11A1
NC1
A2
B2
B1
12A1
NC1
Note:
1. H = High Voltage Level
L = Low Voltage Level
Z = High Impedance
1
2
3
4
5
6
7
8
9
56
55
54
53
52
51
50
49
48
10
47
11
46
12 56-PIN 45
13 A, V 44
14
43
15
42
16
41
17
40
18
39
19
38
20
21
22
23
24
25
26
27
28
37
36
35
34
33
32
31
30
29
NC
NC
1B1
1B 2
2B1
2B 2
3B1
GND
3B 2
4B1
4B 2
5B1
5B 2
6B1
6B 2
7B1
7B 2
8B1
GND
8B2
9B1
9B 2
10B1
10B2
11B1
11B2
12B1
12B2
Product Pin Description
Pin Name
S0
xA1
xBx
NC
NC1
1
I/O
I
I/O
I/O
Description
Select Inputs
Bus A
Bus B
Leave it unconnected
Leave it unconnected
PS8177A
12/14/98
PI3B16292/162292
3.3V, 24-Bit Mux/Demux
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Ω)
BusSwitch (25Ω
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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 ............. –0°C to +85°C
Supply Voltage Range ............................................. –0.5V to +4.6V
DC Input Voltage .................................................... –0.5V to +4.6V
DC Output Current .............................................................. 120 mA
Power Dissipation ................................................................ 0.5Watt
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 = 3.0V to 3.6V)
Test Conditions(1)
Parameters Description
Min.
Typ(2)
Max.
Units
VIH
Input HIGH Voltage
Guaranteed Logic HIGH Level
2.0
—
—
V
VIL
Input LOW Voltage
Guaranteed Logic LOW Level
–0.5
—
0.8
V
II
Input Current
VCC = Max., VIN = VCC or GND
VCC = 0, VIN = VCC
—
—
—
—
±1
10
µA
µA
VIK
Clamp Diode Voltage
VCC = Min., IIN = –18mA
—
–0.7
–1.2
V
16292
—
5
8
Ω
162292
20
28
40
16292
—
10
15
162292
20
35
48
RON
Switch On Resistance
(3)
VCC = Min., VIN = 0.0V,
ION = 64mA
VCC = Min., VIN = 2.4V,
ION = 15mA
Ω
Capacitance (TA = 25°C, f = 1 MHz)
Parameters(4)
CIN
CON
Description
Test Conditions
Max.
Units
Input Capacitance
A/B Capacitance, Switch On
VIN = 0V
VIN = 0V
3.0
30.0
pF
pF
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, 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.
4. This parameter is determined by device characterization but is not production tested.
2
PS8177A
12/14/98
PI3B16292/162292
3.3V, 24-Bit Mux/Demux
Ω)
BusSwitch (25Ω
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Power Supply Characteristics
Parameters
Test Conditions(1)
Description
Min.
Typ(2)
Max.
Units
ICC
Quiescent Power
Supply Current
VCC = MAX.
VIN = GND or VCC
—
—
10
µA
∆ICC(3)
Supply Current for
S0 @ TTL HIGH
VCC = MAX.
VIN = 3.0 V(4)
Other Inputs at VCC OR GND
—
—
750
µA
ICCD
Supply Current for
S0 per MHz(5)
Toggling 50% Duty Cycle
VCC = Max.,
A and B Pins Open
—
—
0.25
mA/
MHz
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for applicable device.
2. Typical values are at Vcc = 3.3V, +25°C ambient.
3. This is the increase in supply current for S0 at the specified TTL voltage level rather than VCC or GND.
4. Per driven input ( S0 only); A and B pins do not contribute to Icc.
5. 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.
PI3B16292 Switching Characteristics over Operating Range
Com.
Parameters
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tm
Conditions(1)
Description
Propagation Delay(2,3)
xA1 to xBx, xBx to xA1
Bus Enable time
S to xA1 or xBx
Bus Disable time
S to xA1 or xBx
Make-before-break time(2)
CL = 50 pF
RL = 500Ω
R = 500Ω to 6V(4)
Min.
Max.
—
0.25
1
4.5
1
5.0
0
2
Units
ns
PI3B162292 Switching Characteristics over Operating Range
Com.
Parameters
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tm
Description
Conditions
(2,3)
(1)
Propagation Delay
xA1 to xBx, xBx to xA1
Bus Enable time
CL = 50 pF
S to xA1 or xBx
RL = 500Ω
Bus Disable time
R = 500Ω to 4.6V(4)
S to xA1 or xBx
Make-before-break time(2)
Min.
Max.
—
1.25
1
5
1
5.5
0
2
Units
ns
Notes:
1. See test circuit and waveforms.
2. This parameter is guaranteed but not tested.
3. The bus switch contributes no propagational delay other than the RC delay of the ON resistance of the switch and 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 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.
4. Applies to tPLZ and tPZL.
3
PS8177A
12/14/98
PI3B16292/162292
3.3V, 24-Bit Mux/Demux
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Ω)
BusSwitch (25Ω
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56-Pin SSOP (300 MIL WIDE) - Package Code: V56
56
.291
.299
7.39
7.59
.396
.416
10.06
10.56
Gauge Plane
.02
.04
0.51
1.01
.010 0.25
1
.015 0.381 x 45˚
.025 0.635
.720
.730
18.29
18.54
.008 0.20 Nom.]
.110 2.79 Max
.008
.0135
0.20
0.34
.025 BSC
0.635
.008 0.20
.016 0.40
0-8˚
X.XX DENOTES DIMENSIONS
X.XX IN MILLIMETERS
56-Pin TSSOP (240 MIL WIDE) - Package Code: A56
56
.236
.244
1
.547
.555
6.0
6.2
13.9
14.1
1.20
.047
Max.
SEATING PLANE
.004
.008
0.45
0.75
.0197
BSC
0.50
.07
.011
0.17
0.27
.002
.006
0.05
0.15
0.09
0.20
.018
.030
.319
BSC
8.1
X.XX
DENOTES DIMENSIONS IN MILLIMETERS
X.XX
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
4
PS8177A
12/14/98