PERICOM PI5C16215CA

PI5C16215C
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20-Bit, Hot Insertion, BusSwitch with
Precharged Outputs & Undershoot Protection
Product Features
Product Description
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Pericom Semiconductor’s PI5C series of logic circuits are produced
using the company’s advanced submicron CMOS technology.
Undershoot protection up to –1.5V, 25ns width
Near zero propagation delay
5 Ohm switches connect between two ports
Fast switching speed: 4.5ns max.
Permits hot insertion
Isolation during power-off conditions
B-Port outputs are precharged by bias voltage
to minimize signal distortion during live insertion.
• Package options include:
- 48-pin 150-mil wide plastic BQSOP (B)
- 48-pin 240-mil wide plastic TSSOP (A)
The PI5C16215C provides 20-bits of high-speed bus switching. The
low on-state resistance of the switch allows connections to be made
with minimal propagation delay. The device also precharges the
B-port to a user-selectable bias voltage (BIASV) to minimize liveinsertion noise. The device incorporates an internal charge pump
to handle input undershoot of up to –1.5V and 25ns width.
The device is organized as dual 10-bit bus switches with individual
output-enable (OE) inputs. When OE is low, the corresponding
10-bit bus switch is on and port A is connected to port B. When OE
is high, the switch is open, a high-impedance state exists between
the two ports, and port B is precharged to BIASV through the
equivalent of a 10-k ohm resistor.
Logic Block Diagram
1
1A1
2
46
SW
To ensure the high-impedance state on power up or power down,
OE should be tied to VCC through a pullup resistor; the minimum
value of the resistor is determined by the current-sinking capability
of the driver connected to OE.
BIASV
1B1
Product Pin Configuration
1A10 12
1OE
36
SW
BIASV
1A1
1A2
1A3
1B10
48
1A 4
1A 5
1A 6
2A1
13
35
SW
GND
1A7
2B1
1A8
1A 9
2A10
24
25
SW
1A10
2B10
2A1
2A 2
2OE
VCC
47
2A 3
GND
2A 4
2A 5
2A 6
A
B
2A 7
2A 8
2A 9
2A 10
OE
1
1
2
3
4
5
6
7
8
9
10
48
1OE
47
46
2O E
45
44
43
1B2
1B3
1 B4
42
41
1B5
40
39
38
1 B6
11
12 48-Pin 37
A,B 36
13
14
35
15
34
16
33
17
32
18
31
19
30
20
29
21
22
23
24
1 B1
GND
1B7
1B 8
1 B9
1 B10
2B1
2B2
2B 3
GND
2B4
2B 5
2B6
28
27
26
2B 7
25
2B10
2B 8
2B9
PS8369B
12/15/01
PI5C16215C
20-Bit, Hot Insertion, BusSwitch with
Precharged Outputs & Undershoot Protection
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Absolute Maximum Ratings Over Free-Air Temperature Range
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature ..................................... –65°C to +150°C
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.
Supply Voltage Range ........................................ –0.5V to +7V
DC Input Voltage(1) ...................................................... –0.5V to +7V
Input Clamp Current, IIK (VI <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.
Recommended Operating Conditions (Over Recommended Operating Free-air Temperature Range)
Parame te r
De s cription
M in.
M ax.
VCC
Supply voltage
4
5.5
BIASV
Supply voltage
1.3
VCC
VIH
High- Level input voltage
VIL
Low- level input voltage
TA
Operating free- air temperature
Units
V
2
0.8
–40
85
°C
Electrical Characteristics (Over Recommended Operating Free-air Temperature Range)
Parame te r
Te s t Conditions
VIK
VCC = 4.5V
II = –18mA
II
VCC = 5.5V
VI = 5.5V or GND
IO
VCC = 4.5V
BIASV = 2.4V
ICC
VCC = 5.5V
∆ICCE Control pins
VCC = 5.5V
Control pins
VI =3V or 0
CI
CO (OFF)
VO =3V or 0
VCC = 4V
rON*
VCC = 4.5V
VO = 0
IO = 0
M in.
Typ=
M ax.
Units
–1.8
V
±5
µA
0.25
mA
VI = VCC or GND
One input at 3.4V, Other at VCC or GND
100
µA
2.5
mA
3.5
Switch Off
pF
4.5
VI = 2.4V
II = 15mA
9
20
VI = 0,
II = 64mA
5.5
8
VI = 0,
II = 30mA
5
8
VI = 2.4V
II = 15mA
9
15
ohm
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.
E This is the increase in supply current for each input that is at the specified TTL voltage level rather the VCC or GND.
= All typical values are at VCC = 5V, TA = 25°C.
2
PS8369B
12/15/01
PI5C16215C
20-Bit, Hot Insertion, BusSwitch with
Precharged Outputs & Undershoot Protection
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Truth Table
OE
Function
L
A port = B port
H
A port = Z, B Port = BIASV
Switching Characteristics (Over Recommended Operating Free-air Temperature Range, CL = 50pF)
Parame te r
Te s t Conditions
tPD
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
VCC = 5V ± 0.5V
M in.
M ax.
VCC = 4V
M in.
Units
M ax.
0.25
0.25
3.1
5
6
3.0
5
6
2.0
5
5.5
3
5
5.5
ns
Notes:
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).
Parameter Measurements
7V
S1
500ohm
From Output
Under Test
CL = 50pF
(See note 1)
Open
GND
500ohm
Output
Control
(Low Level
Enabling)
LOAD CIRCUIT
3V
Output
Waveform 1
S1 at 6V
(see Note 2)
1.5V
1.5V
Input
0V
tPLH
tPHL
Output
Waveform 2
S1 at Open
(see Note 2)
VOH
Output
1.5V
1.5V
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
Te s t
S1
tpd
O pen
tPLZ/tPZL
7V
tPHZ/tPZH
O pen
3V
1.5V
1.5V
0V
tPZL
tPLZ
3.5V
1.5V
VOL +0.3V
tPZH
VOL
tPHZ
VOH
1.5V
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
PS8369B
12/15/01
PI5C16215C
20-Bit, Hot Insertion, BusSwitch with
Precharged Outputs & Undershoot Protection
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48-pin BQSOP (B)
48
.150
.157
3.80
4.00
.228
.244
5.80
6.20
Gauge Plane
.020
.029
0.50
0.75
.010 0.25
BSC
1
.014 0.356 REF
.386
.394
9.80
10.00
.015 0.381 x 45˚
.008 0.20 Nom
Nom
.063 1.60
.002 0.05
.009 0.25
5˚
.0157 BSC
0.40
.0051
.009
0.13
0.23
X.XX DENOTES DIMENSIONS
X.XX IN MILLIMETERS
.079
2.0 Max
48-pin TSSOP (A)
48
.236
.244
1
6.0
6.2
.488 12.4
.496 12.6
.047
1.20 Max
SEATING PLANE
.004 0.09
.008 0.20
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
.0197
BSC
0.50
.007
.010
0.17
0.27
.002
.006
0.05
0.15
4
0.45 .018
0.75 .030
.319
BSC
8.1
PS8369B
12/15/01
PI5C16215C
20-Bit, Hot Insertion, BusSwitch with
Precharged Outputs & Undershoot Protection
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48-pin SSOP (V)
48
.291
.299
7.39
7.59
.395
.420
10.03
10.67
Gauge Plane
.010 0.25
.02 0.51
.04 1.01
1
.620
.630
15.75
16.00
.015 0.381 x 45˚
.025 0.635
.008
0.20
Nom.
.110 2.79 Max
.025 BSC
0.635
.008 0.20
.0135 0.34
Part
Pin - Package
Width
PI5C16215CB
48 - BQSOP (B48)
150- mil
PI5C16215CA
48 - TSSOP (A48)
240- mil
0-8˚
.008 0.20
.016 0.40
X.XX DENOTES DIMENSIONS
X.XX IN MILLIMETERS
Ordering Information
Applications Information
Logic Inputs
The logic control inputs can be driven up to +5.5V regardless of the
supply voltage. For example, given a +5.0V supply, IN may be driven
low to 0V and high to 5.5V. Driving IN Rail-to-Rail® minimizes power
consumption.
Power-Supply Sequencing
Proper power-supply sequencing is recommended for all CMOS
devices. Always apply VCC before applying signals to the bias
voltage pin and the 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
5
PS8369B
12/15/01