1
PS8139C 01/11/00
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PI5C16292
PI5C162292 (25
)
Description
Pericom Semiconductor's PI5C series of logic circuits are produced
using the Company's advanced 0.6 micron CMOS technology.
The PI5C16292 and PI5C162292 are 12-bit to 24-bit Mux/Demux
Bus switches designed with a low ON resistance allowing inputs
to be connected directly to outputs.
The PI5C162292 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.
Features
Near-zero propagation delay
5
switches connect inputs to outputs
Direct bus connection when switches are ON
Internal 500
pull-down on A
2
ports
Ultra-low quiescent power (0.2A typical)
Ideally suited for notebook applications
Industrial operating temperature: 40C to +85C
Make-before-break switching
Packages available:
56-pin 240-mil wide thin plastic TSSOP (A)
56-pin 300-mil wide plastic SSOP (V)
Pin Configuration
Function
S0
A1
A2
A1 to B1, A2 to B2
L
B1
B2
A1 to B2, A2 to B1
H
B2
B1
Logic Block Diagram
Product Pin Description
Pin Name
I/O
Description
S0
I
Select Inputs
xA1
I/O
Bus A
xB
x
I/O
Bus B
NC
Internally pulled up thru 4.7k resistor
NC1
Leave it unconnected
Note:
1.
H = High Voltage Level
L = Low Voltage Level
Z = High Impedance
Truth Table
56-Pin
A,V
Applications
Memory switching
1
2
3
4
5
6
7
GND
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
25
26
27
28
32
31
30
29
1
A
1
NC1
S
0
2
A
1
NC1
3
A
1
NC1
4
A
1
NC1
5
A
1
NC1
6
A
1
NC1
V
CC
7
A
1
NC1
8
A
1
GND
NC1
9
A
1
NC1
10
A
1
NC1
11
A
1
NC1
12
A
1
NC1
GND
1
B
1
1
B
2
NC
2
B
1
2
B
2
3
B
1
3
B
2
4
B
1
4
B
2
5
B
1
5
B
2
6
B
1
6
B
2
7
B
1
7
B
2
8
B
1
GND
8
B
2
9
B
1
9
B
2
10
B
1
10
B
2
11
B
1
11
B
2
12
B
1
12
B
2
NC
24-Bit Mux/Demux Bus Switch
PI5C16292/162292
24-Bit Mux/Demux BusSwitch (25
)
2
PS8139C 01/11/00
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Storage Temperature ................................................................. 65C to +150C
Ambient Temperature with Power Applied ................................. 40C to +85C
Supply Voltage to Ground Potential (Inputs & V
CC
Only) ......... 0.5V to +7.0V
Supply Voltage to Ground Potential (Outputs & D/O Only) ....... 0.5V to +7.0V
DC Input Voltage ......................................................................... 0.5V to +7.0V
DC Output Current .................................................................................... 120mA
Power Dissipation ........................................................................................ 1Watt
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, T
A
= 40C to +85C, V
CC
= 5V 10%)
Parameters Description
Test Conditions
(1)
Min.
Typ
(2)
Max.
Units
V
IH
Input HIGH Voltage
Guaranteed Logic HIGH Level
2.0
--
--
V
V
IL
Input LOW Voltage
Guaranteed Logic LOW Level
0.5
--
0.8
V
I
I
Input Current
V
CC
= Max., V
IN
= V
CC
or GND
--
--
1
A
V
CC
= 0, V
IN
= V
CC
--
--
10
A
V
IK
Clamp Diode Voltage
V
CC
= Min., I
IN
= 18mA
--
0.7
1.2
V
I
OS
Short Circuit Current
(3)
A(B) = 0V, B (A) = V
CC
100
--
--
mA
V
H
Input Hysteresis at Control Pins
--
150
--
mV
r
ON
Switch On Resistance
(4)
V
CC
= Min., V
IN
= 0.0V,
16292
--
5
7
I
ON
= 64mA
162292
20
28
40
V
CC
= Min., V
IN
= 2.4V,
16292
--
--
12
I
ON
= 15mA
162292
20
35
48
Capacitance
(T
A
= 25C, f = 1 MHz)
Parameters
(5)
Description
Test Conditions
Max.
Units
C
IN
Input Capacitance
V
IN
= 0V
6
pF
C
OFF
A/B Capacitance, Switch Off
V
IN
= 0V
10
pF
C
ON
A/B Capacitance, Switch On
V
IN
= 0V
20
pF
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at V
CC
= 5.0V, T
A
= 25C 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.
5. This parameter is determined by device characterization but is not production tested.
Recommended Operating Condition
Parameter
Description
Min.
Max.
Units
V
CC
Supply Voltage
4
5.5
V
V
IH
High-Level Input Voltage
2
--
V
V
IL
Low-Level Input Voltage
--
0.8
V
T
A
Operating Free-Air Temperature
40
85
C
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
3
PS8139C 01/11/00
PI5C16292/162292
24-Bit Mux/Demux BusSwitch (25
)
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Power Supply Characteristics
Parameters
Description
Test Conditions
(1)
Min.
Typ
(2)
Max.
Units
I
CC
Quiescent Power
V
CC
= M
AX
.
V
IN
= GND or V
CC
--
0.1
3.0
A
Supply Current
I
CC
(3)
Supply Current for
V
CC
= M
AX
.
V
IN
= 3.4 V
(4)
--
--
2.5
mA
S0
@ TTL HIGH
Other Inputs at V
CC
OR
GND
I
CCD
Supply Current for
V
CC
= Max.,
--
--
0.75
mA/
S0 per MHz
(5)
A and B Pins Open
MHz
Toggling 50% Duty Cycle
Notes:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for applicable device.
2. Typical values are at V
CC
= 5.0V, +25C ambient.
3. This is the increase in supply current for S0
at the specified TTL voltage level rather than V
CC
or GND.
4. Per TTL driven input (V
IN
= 3.4V, S0 only); A and B pins do not contribute to I
CC
.
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.
PI5C16292 Switching Characteristics over Operating Range
PI5C16292
Com.
Parameters
Description
Conditions
(1)
Min
Max
Units
t
PLH
Propagation Delay
(2,3)
--
0.25
ns
t
PHL
xA1 to xBx, xBx to xA1
t
PZH
Bus Enable time
1.5
6.5
ns
t
PZL
S to xA1 or xBx
t
PHZ
Bus Disable time
1.5
7
ns
t
PLZ
S to xA1 or xBx
1.5
8
t
M
Make-before-break time
(2)
0
2
ns
PI5C162292 Switching Characteristics over Operating Range
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 t
PLZ
and t
PZL
.
PI5C162292
Com.
Parameters
Description
Conditions
(1)
Min
Max
Units
t
PLH
Propagation Delay
(2,3)
--
1.25
ns
t
PHL
xA1 to xBx, xBx to xA1
t
PZH
Bus Enable Time
1.5
6.5
ns
t
PZL
S to xA1 or xBx
t
PHZ
Bus Disable Time
1.5
7
ns
t
PLZ
S to xA1 or xBx
1.5
8
t
M
Make-before-break time
(2)
0
2
ns
C
L
= 50pF
R
L
= 500
R = 500
to 7V
(4)
C
L
= 50pF
R
L
= 500
R = 500
to 7V
(4)
PI5C16292/162292
24-Bit Mux/Demux BusSwitch (25
)
4
PS8139C 01/11/00
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Pericom Semiconductor Corporation
2380 Bering Drive San Jose, CA 95131 1-800-435-2336 Fax (408) 435-1100 http://www.pericom.com
56-Pin SSOP (300 Mil Wide) - Package Code: V
56-Pin TSSOP (240 Mil Wide) - Package Code: A
0.25
0.20
.025 BSC
0.635
.008
.008
.016
0-8
0.20
0.40
.110 2.79
.010
Gauge Plane
.291
.299
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
7.39
7.59
.396
.416
10.06
10.56
.02
.04
0.51
1.01
.015
.025
0.381
0.635
.720
.730
18.29
18.54
.008
.0135
0.20
0.34
1
56
x 45
Nom.
Max
.002
.006
SEATING PLANE
.07
.011
.004
.008
1
56
.236
.244
0.50
0.17
0.27
0.05
0.15
0.09
0.20
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
.018
.030
0.45
0.75
.047
Max.
1.20
6.0
6.2
.547
.555
13.9
14.1
.319
8.1
.0197
BSC
BSC
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