PERICOM PI3C16215A

PI3C16215
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3.3V, 2-Port, 20-Bit Bus Switch
with Precharged Outputs
for Live Insertion
Product Features
Product Description
• Near zero propagation delay
Pericom Semiconductor’s PI3C series of logic circuits are produced
using the Company’s advanced submicron CMOS technology,
achieving industry leading performance.
• 5-ohm switch connection between two ports
• High Bandwidth (>200 MHz)
The PI3C16215 is a 20-bit bus switch with low ON-State resistance.
The bus switch creates no additional propagation delay. To minimize
live-insertion noise, the device also precharges the B port to a userselectable bias voltage (BIASV).
• Rail-to-Rail 3.3V Switching
• Outputs are precharged by bias voltage to
minimize signal distortion during live insertion
• 5V I/O Tolerant
The switch is turned on by a single enable (OE) input. When OE is
LOW, the switch is on and port A is connnected to port B. When
OE is HIGH, the switch between port A and port B is open and
the B port is precharged to BIASV through the equivalent of a
10k-ohm resistor.
• Package options:
– 48-pin 150 mil wide plastic BQSOP (B)
– 48-pin 240 mil wide plastic TSSOP (A)
Product Pin Configuration
Logic Diagram
1 BIASV
1A1
2
1A10 12
1OE
SW
46 1B1
36
1B10
48
13
24
2OE
SW
SW
SW
35
25
2B1
2B10
47
Truth Table
OE
Function
L
A port = B port
H
A port = Z, A port = BIASV
BIASV
1
48
1OE
1A1
2
47
2OE
1A2
3
46
1B1
1A3
4
45
1B2
1A4
5
44
1B3
1A5
6
43
1B4
1A6
7
42
1B5
GND
8
41
GND
1A7
9
40
1B6
1A8
10
39
1B7
1A9
11
38
1B8
1A10
12
37
1B9
2A1
13
36
1B10
48-Pin
A,B
2A2
14
35
2B1
VCC
15
34
2B2
2A3
16
33
2B3
GND
2A4
17
32
GND
18
31
2B4
2A5
19
30
2B5
2A6
20
29
2B6
2A7
21
28
2B7
2A8
22
27
2B8
2A9
23
24
26
25
2B9
2A10
2B10
Note:
1. H= High Voltage Level 2. L= Low Voltage Level
1
PS8409D
03/19/01
PI3C16215
3.3V, 2-Port, 20-Bit Bus Switch with
Precharged Outputs for Live Insertion
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Absolute Maximum Ratings Over Free-Air Temperature Range
1
*
(Above which the useful life may be impaired. For user guidelines, not tested.)
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.
Storage Temperature...................................... –65°C to +150°C
Supply Voltage Range .......................................... –0.5V to 4.6V
DC Input Voltage(1) ............................................ –0.5V to +5.5V
Input Clamp Current, IIK (V1< 0) .....................................–50mA
DC Output Current .......................................................... 120mA
Power Dissipation(2) .......................................................... 0.5W
Notes:
1. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
2. The maximum package power dissipation is calculated using a junction temperatue of 150°C and a board trace length of 750 mils.
M in.
M ax.
VCC
Supply voltage
3.0
3.3
BIASV
Supply voltage
1.3
VCC
VIH
High- level input voltage
VIL
Low- level input voltage
TA
O perating free- air temperature
6
V
2
0.8
–40
85
7
°C
De s cription
Te s t Conditions
8
M in.
Typ.†
M ax.
Units
–0.73
–1.2
V
±5
µA
Clamp Diode Voltage
VCC = 3.0V, IIN = –18mA
II
Input Current
VCC = 3.6V, VIN = VCC or GND
IO
Output Current
VCC = 3.0V, BIASV = 2.4V,
ICC
Quiescent Power Supply Current
VCC = 3.6V, IO = 0, VIN = VCC or GND
∆ICC
Power Supply Current per Input
VCC = 3.6V, One input at 2.7V
Other at VCC or GND
CIN
Input Capacitance
VCC = 0V
3.5
C O FF
A/B Capacitance
VCC = 0V, Switch Off
5.0
VO = 0
0.25
mA
260
VIN = 0, IIN = 64mA
RON*
Switch on Resistance
4
Units
Electrical Characteristics (Over Recommended Operating Free-Air Temperature Range)
VIK
3
5
Recommended Operating Conditions
Parame te rs
2
VCC = 3.0V
850
µA
2.5
mA
pF
5
8.5
VIN = 2.4V, IIN = 30mA
8.0
15
VIN = 2.4V, IIN = 15mA
8.0
15
10
11
12
13
Ω
Notes:
* Measured by the voltage drop between the A and B terminals at the indicated current through the switch.
On-state resistance is determined by the lower of the voltages of the two (A or B) terminals.
‡ This is the increase in supply current for control input.
† All typical values are at VCC = 3.3V, TA = 25°C.
2
9
14
15
PS8409D
03/19/01
PI3C16215
3.3V, 2-Port, 20-Bit Bus Switch with
Precharged Outputs for Live Insertion
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1
Switching Characteristics (Over Recommended Operating Free-air Temperature Range, CL = 50pF)
Parame te r
Te s t Conditions
tPD(1)
tPZH
BIASV = GND
tPZL
BIASV = 3V
tPHZ
BIASV = GND
tPLZ
BIASV = 3V
From (Input)
To (Output)
A or B
B or A
ON
A or B
ON
A or B
M in.
M ax.
Units
2
0.25
1.5
6.5
1.5
6.5
1.5
5.5
1.5
5.5
ns
Note:
1. This parameter is warranted but not production tested. The propagation delay is based on the RC time constant of the typical on
state resistance of the switch and a load capacitance of 50pF, when driven by an ideal voltage source (zero output impedance).
3
4
5
Parameter Measurements
6V
500Ohm
From Output
Under Test
CL = 50pF
(See note 1)
S1
Open
GND
500Ohm
6
Te s t
S1
tPD
Open
tPLZ/tPZL
6V
tPHZ/tPZH
GND
7
8
LOAD CIRCUIT
Output
Control
(Low Level
Enabling)
Output
Waveform 1
S1 at 6V
(see Note 2)
Output
Waveform 2
S1 at Open
(see Note 2)
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
3V
1.5V
1.5V
0V
tPZL
tPLZ
3.5V
1.5V
VOL +0.3V
tPZH
VOH
1.5V
10
VOL
tPHZ
11
VOH -0.3V
0V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
Notes:
1. CL includes probe and jig capacitance.
2. Waveform 1 is for an output with internal conditions such that the output is LOW except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is HIGH except when disabled by the output control.
3. All input pulses are supplied by generators having the following characteristics: PRR<10MHz, ZO = 50Ω, tR ≤ 2.5ns, tF ≤ 2.5ns.
4. The outputs are measured one at a time with one transition per measurement.
5. tPLZ and tPHZ are the same as tDIS.
6. tPZL and tPZH are the same as tEN.
7. tPLH and tPHL are the same as tPD.
3
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PS8409D
03/19/01
12
13
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PI3C16215
3.3V, 2-Port, 20-Bit Bus Switch with
Precharged Outputs for Live Insertion
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48-Pin TSSOP (A) Package
1
48
.236
.244
1
2
6.0
6.2
.488 12.4
.496 12.6
3
.047
1.20 Max
SEATING PLANE
.004 0.09
.008 0.20
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
.0197
BSC
0.50
.002
.006
0.05
0.15
.007
.010
0.17
0.27
4
0.45 .018
0.75 .030
5
.319
BSC
8.1
48-Pin BQSOP (B) Package
6
48
.150
.157
3.80
4.00
7
.228
.244
5.80
6.20
8
Gauge Plane
.020
.029
0.50
0.75
.010 0.25
BSC
1
.014 0.356 REF
.386
.394
9.80
10.00
Nom
.063 1.60
X.XX DENOTES DIMENSIONS
X.XX IN MILLIMETERS
.0051
.009
0.13
0.23
Pin - Package
10
11
Ordering Information
Part
.079
2.0 Max
.002 0.05
.009 0.25
5˚
.0157 BSC
0.40
9
.015 0.381 x 45˚
.008 0.20 Nom
Applications Information
Width
PI3C16215A 48- TSSOP (A48)
240- mil
PI3C16215B 48- BQSOP (B48)
240- mil
12
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.
–40ºC to +85ºC
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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PS8409D
03/19/01
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