PERICOM PI3C16211

PI3C16211
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3.3V, High Bandwidth 24-Bit Bus Switch
Product Features
Product Description
• Near-zero propagation delay
Pericom Semiconductor’s PI3C series of bus switch circuits are
produced using the Company’s advanced submicron CMOS
technology.
• 5 Ohm switches connect inputs to outputs
• Direct bus connection when switches are ON
The PI3C16211 is a 24-bit bus switch designed with a low ON
resistance allowing inputs to be connected directly to outputs. This
device operates as a 24-bit or a 12-bit bus switch, which provides
high speed bus switching.
• Ultra-low quiescent power (0.2mA typical)
– Ideally suited for notebook applications
• Industrial operating temperature: –40°C to +85°C
• Packages available:
– 56-pin 240-mil wide thin plastic TSSOP (A)
– 56-pin 300-mil wide plastic SSOP (V)
Product Pin Configuration
Logic Block Diagram
1
2
56
55
1OE
54
53
52
1B1
1A4
3
4
5
1A5
6
1B4
1A6
7
8
51
50
49
48
1B6
1A8
9
10
47
1B7
1OE
1A9
11
2A1
12
13
46
45
1B8
1 A 10
44
1 B 10
43
42
1 B 11
41
2B1
17
18
40
39
2B2
19
20
21
38
37
36
GND
22
23
24
35
34
33
2B6
25
26
32
31
2B9
27
28
30
29
2 B 11
NC
1A1
1A1
1B1
1A2
1A3
1A12
1B12
GND
1A7
2B1
1 A 11
1 A 12
2A12
2B12
2A1
2A2
V CC
2A3
GND
2A4
2OE
2A5
2A6
Truth Table
1OE
2A7
2OE
1A, 1B
I/Os
2A, 2B
2A8
I/Os
2A9
Note:
L
L
1A = 1B
2A = 2B
2 A 10
L
H
1A = 1B
Z
2 A 11
H
L
Z
2A = 2B
H
H
Z
Z
2 A 12
56-Pin
A,V
14
15
16
2OE
1B2
1B3
1B5
GND
1B9
1 B 12
2B3
2B4
2B5
2B7
2B8
2 B 10
2 B 12
Product Pin Description
1. H = High Voltage Level
L = Low Voltage Level
Z = High Impedance
Pin Name
S0-S2
xAx
xBx
1
I/O
I
I/O
I/O
Description
Select Inputs
Bus A
Bus B
PS8456C
05/29/01
PI3C16211
3.3V,
High
Bandwidth
24-Bit
Bus
Switch
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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 +4.6V
Supply Voltage to Ground Potential (Outputs & D/O Only) .......... –0.5V to +4.6V
DC I/O Voltage .............................................................................–0.5V to +5.5V
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 = 3.3V ±10%)
Parame te rs
Te s t Conditions (1 )
De s cription
M in.
Typ.(2 )
M ax.
VIH
Input HIGH Voltage
Guaranteed Logic HIGH Level
2.0
—
—
VIL
Input LOW Voltage
Guaranteed Logic LOW Level
–0 . 5
—
0.8
IIH
Input HIGH Current
VC C = Max., VIN = VC C
—
—
±1
IIL
Input LOW Current
VC C = Max., VIN
—
—
±1
High- Impedence Output Current
0 ≤ A, B ≤ VC C
—
—
±1
Clamp diode Voltage
VC C = Min., IIN = –18mA
—
–0.73
–1.2
VC C = Min.,VIN = 0.0V
IO N = 48mA or 64mA
—
6.5
8.5
VC C = Min.,VIN = 2.4V
IO N = 15mA
—
Units
V
IO Z(3 )
VIK
Switch On
RO N
Resistance(4 )
=
GND
µA
V
Ω
10
15
Capacitance (TA = 25°C f = 1 MHz)
Parame te rs (5)
De s cription
CIN
Input Capacitance
C O FF
A/B Capacitance, Switch Off
CON
A/B Capacitance, Switch On
Te s t Conditions
Typ.
Units
3.5
VIN = 0V
4.0
pF
8.0
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. 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
PS8456C
05/29/01
PI3C16211
3.3V,
High
Bandwidth
24-Bit
Bus
Switch
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Power Supply Characteristics
Parame te rs
ICC
DICC
Te s t Conditions (1)
M in.
Typ.(2)
M ax.
VCC = Max.
VIN = GND or VCC
—
260
850
VCC = Max.
VIN = 3.0V(3)
—
De s cription
Quiescent Power Supply Current
Supply Current per Input @ TTL HIGH
Units
µA
—
750
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 inputs only); A and B pins do not contribute to ICC.
PI3C16211 Switching Characteristics Over Operating Range
PI3C16211
Com
Parame te rs
De s cription
tPLH
tPHL
Propagation Delay(2,3)
AX to BX, BX to AX
tPZH
tPZL
Bus Enable Time
nOE to AX or BX
tPHZ
tPLZ
Bus Disable Time
nOE to AX or BX
Conditions (1)
M in.
M ax.
C L = 50pF
RL = 500Ω
—
0.25
1.5
6.5
1.5
5.5
C L = 50pF
RL = 500Ω
R = 500Ω
Units
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.
3
PS8456C
05/29/01
PI3C16211
3.3V,
High
Bandwidth
24-Bit
Bus
Switch
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56-Pin TSSOP (A) Package
56
.236
.244
1
.547
.555
6.0
6.2
13.9
14.1
1.20
SEATING PLANE
.047
Max.
.004 0.09
.008 0.20
.0197
BSC
0.50
.007
.011
0.17
0.27
X.XX DENOTES DIMENSIONS
X.XX IN MILLIMETERS
0.45 .018
0.75 .030
.002
.006
0.05
0.15
.319 BSC
8.1
56-Pin SSOP (V) Package
56
.291
.299
7.39
7.59
.396
.416
10.06
10.56
Gauge Plane
.010 0.25
1
.720 18.29
.730 18.54
.02
.04
0.51
1.01
.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
0-8˚
.008 0.20
.016 0.40
Applications Information
Ordering Information
Part
Pin - Package
Width
PI3C16211A
56 - TSSOP (A)
240- mil
PI3C16211V
56 - SSOP (V)
300- mil
Logic Inputs
Te mpe rature
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.
0°C to 85°C
Power-Supply Sequencing
Proper power-supply sequencing is recommended for all CMOS
devices. Always apply VCC before applying VBIAS and signals to
input/output or control pins.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
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PS8456C
05/29/01