ETC PI5C16292A

PI5C16292
PI5C162292 (25ohm)
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24-Bit Mux/Demux Bus Switch
Description
Features
•
•
•
•
•
Near-zero propagation delay
5-Ohm switches connect inputs to outputs
Direct bus connection when switches are ON
Internal 500-Ohm pull-down on A2 ports
Ultra-low quiescent power (0.2µA typical)
– Ideally suited for notebook applications
• 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)
Pericom Semiconductor’s PI5C series of logic circuits are produced
using the Company’s advanced submicron 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.
Pin Configuration
Applications
• Memory switching
S0
Logic Block Diagram
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1A1
NC
2A 1
ONE OF TWELVE CHANNELS
NC
1B1
1A1
3A1
NC
GND
4A1
NC
5A1
1 B2
NC
500Ω
6A1
NC
7A1
NC
FLOW CONTROL
16
17
18
19
VCC
8A1
S0
GND
NC
20
21
22
9A1
Truth Table
Function
A1 to B1, A2 to B2
A1 to B2, A2 to B1
NC
S0
L
H
A1
B1
B2
23
24
10A1
A2
B2
B1
NC
11A1
56-Pin
A,V
45
44
43
42
41
40
39
38
37
NC
NC
1B1
1B2
2B1
2B2
3B1
GND
3B2
4B1
4B2
5B1
5B2
6B1
6B2
7B1
7B2
8B1
GND
8B2
36
35
34
9B2
33
10B2
9B1
10B1
25
32
11B1
31
30
11B2
12A1
26
27
NC
28
29
12B2
NC
Note:
1. H = High Voltage Level
L = Low Voltage Level
Z = High Impedance
56
55
54
53
52
51
50
49
48
47
46
12B1
Product Pin Description
Pin Name
I/O
S0
I
xA1
I/O
Bus A
xBx
I/O
Bus B
NC
1
De s cription
Select Inputs
Leave Unconnected
PS8139D
12/13/00
PI5C16292/162292
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Ω)
24-Bit Mux/Demux 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 ............................. –40°C to +85°C
Supply Voltage to Ground Potential (Inputs & VCC 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.
Recommended Operating Condition
Parameter
Description
Min.
Max.
Units
VCC
VIH
Supply Voltage
High-Level Input Voltage
4
2
5.5
—
V
V
VIL
Low-Level Input Voltage
—
0.8
V
TA
Operating Free-Air Temperature
–40
85
°C
DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 5V ±10%)
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
A(B) = 0V, B (A) = VCC
100
—
—
mA
—
150
—
mV
16292
—
5
7
ohm
162292
20
28
40
16292
—
—
12
162292
20
35
48
(3)
IOS
Short Circuit Current
VH
Input Hysteresis at Control Pins
rON
Switch On Resistance(4)
VCC = Min., VIN = 0.0V,
ION = 64mA
VCC = Min., VIN = 2.4V,
ION = 15mA
ohm
Capacitance (TA = 25°C, f = 1 MHz)
Parameters(5)
Description
Test Conditions
Max.
Units
C IN
COFF
Input Capacitance
A/B Capacitance, Switch Off
VIN = 0V
VIN = 0V
6
10
pF
pF
C ON
A/B Capacitance, Switch On
VIN = 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 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.
5. This parameter is determined by device characterization but is not production tested.
2
PS8139D
12/13/00
PI5C16292/162292
Ω)
24-Bit
Mux/Demux
BusSwitch (25Ω
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Power Supply Characteristics
Parameters
Test Conditions(1) Min.
Description
Typ(2)
Max.
Units
ICC
Quiescent Power
Supply Current
VCC = MAX.
VIN = GND or VCC
—
0.1
3.0
µA
∆ICC(3)
Supply Current for
S0 @ TTL HIGH
VCC = MAX.
VIN = 3.4 V(4)
Other Inputs at VCC or GND
—
—
2.5
mA
ICCD
Supply Current for
S0 per MHz(5)
Toggling 50% Duty Cycle
VCC = Max.,
A and B Pins Open
—
—
0.75
mA/
MHz
Notes:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for applicable device.
2. Typical values are at VCC = 5.0V, +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 TTL driven input (VIN = 3.4V, 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.
PI5C16292 Switching Characteristics over Operating Range
Parameters Description
tplh
tphl
tpzh
tpzl
tphz
tplz
tm
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)
Conditions(1)
CL = 50pF
RL = 500ohm
R = 500ohm
to 7V(4)
PI5C16292
Com.
Min
Max
Units
—
0.25
ns
1.5
6.5
ns
1.5
1.5
0
7
8
2
ns
ns
PI5C162292 Switching Characteristics over Operating Range
Parameters Description
tplh
tphl
tpzh
tpzl
tphz
tplz
tm
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)
Conditions(1)
CL = 50pF
RL = 500ohm
R = 500ohm
to 7V(4)
PI5C162292
Com.
Min
Max
Units
—
1.25
ns
1.5
6.5
ns
1.5
1.5
0
7
8
2
ns
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
PS8139D
12/13/00
PI5C16292/162292
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Ω)
24-Bit Mux/Demux BusSwitch (25Ω
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56-Pin SSOP (300 Mil Wide) - Package Code: V
56
.396
.416
10.06
10.56
.291
.299
7.39
7.59
Gauge Plane
.02
.04
0.51
1.01
.010 0.25
1
.720 18.29
.730 18.54
.015 0.381 x 45˚
.025 0.635
.008
0.20
Nom.
.110 2.79 Max
.008
.0135
0.20
0.34
.025 BSC
0.635
X.XX DENOTES DIMENSIONS
X.XX IN MILLIMETERS
.008 0.20
.016 0.40
0-8˚
56-Pin TSSOP (240 Mil Wide) - Package Code: A
56
.236 6.0
.244 6.2
1
.547 13.9
.555 14.1
1.20
SEATING PLANE
.047
Max.
.004 0.09
.008 0.20
.0197
BSC
0.50
.007
.011
X.XX DENOTES DIMENSIONS
X.XX IN MILLIMETERS
0.17
0.27
0.45 .018
0.75 .030
.002
.006
0.05
0.15
.319 BSC
8.1
Ordering Information
Part
Pin
Package
PI5C16292A
56
TSSOP (A)
PI5C16292V
56
SSOP (V)
PI5C162292A
56
TSSOP (A)
PI5C162292V
56
SSOP (V)
Te mpe rature
–40°C to +85°C
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
4
PS8139D
12/13/00