PI5C16215C [PERICOM]
20-Bit,Hot Insertion,BusSwitch with Precharged Outputs & Undershoot Protection; 20位,热插拔, BusSwitch与预充电输出和冲保护型号: | PI5C16215C |
厂家: | PERICOM SEMICONDUCTOR CORPORATION |
描述: | 20-Bit,Hot Insertion,BusSwitch with Precharged Outputs & Undershoot Protection |
文件: | 总5页 (文件大小:166K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
PI5C16215C
20-Bit, Hot Insertion, BusSwitch with
Precharged Outputs & Undershoot Protection
ProductFeatures
ProductDescription
Undershoot protection up to 1.5V, 25ns width
PericomSemiconductorsPI5Cseriesoflogiccircuitsareproduced
using the companys advanced submicron CMOS technology.
Near zero propagation delay
5 Ohm switches connect between two ports
Fast switching speed: 4.5ns max.
Permits hot insertion
ThePI5C16215Cprovides20-bitsofhigh-speedbusswitching.The
lowon-stateresistanceoftheswitchallowsconnectionstobemade
with minimal propagation delay. The device also precharges the
B-port to a user-selectable bias voltage (BIASV) to minimize live-
insertion noise. The device incorporates an internal charge pump
to handle input undershoot of up to 1.5V and 25ns width.
Isolation during power-off conditions
B-Port outputs are precharged by bias voltage
to minimize signal distortion during live insertion.
Thedeviceisorganizedasdual 10-bitbusswitcheswithindividual
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.
Package options include:
-48-pin150-milwideplasticBQSOP(B)
-48-pin240-milwideplasticTSSOP(A)
LogicBlockDiagram
To ensure the high-impedance state on power up or power down,
OE should be tied to V through a pullup resistor; the minimum
valueoftheresistorisdeterminedbythecurrent-sinkingcapability
of the driver connected to OE.
CC
1
BIASV
1B1
2
46
1A1
SW
SW
ProductPinConfiguration
BIASV
1
2
1
1
O
O
B
E
E
1
1
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
12
36
1A10
1B10
1A1
2
1
A
2
3
4
5
6
3
B2
1
A
A
4
48
13
1B3
1
5
1OE
2A1
1A
6
1B4
1A
1B5
7
35
25
GND
GND
8
SW
SW
2B1
1
A
7
8
9
9
1
B6
1B7
1
A
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
1
1
1
2
B8
1A
24
47
48-Pin
A,B
B
9
1A10
2A10
2OE
2B10
2A1
B
10
2A
2
B1
2B2
VCC
2A
3
2B3
GND
GND
2
A
4
5
6
2
2
2
2
2
2
2
B4
2
A
B
5
2A
B6
A
B
B
7
8
2
A
A
7
8
2
B
B
9
2A
9
2A
10
B10
OE
PS8369B
12/15/01
1
PI5C16215C
20-Bit,HotInsertion,BusSwitchwith
PrechargedOutputs&UndershootProtection
AbsoluteMaximumRatingsOverFree-AirTemperatureRange
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature ..................................... 65°Cto+150°C
Supply Voltage Range ........................................ 0.5Vto+7V
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.
(1)
DC Input Voltage ...................................................... 0.5Vto+7V
InputClampCurrent, I (V <0) ................................. 50mA
IK
I
DC Output Current ....................................................... 120mA
(2)
Power Dissipation .................................................................... 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.
RecommendedOperatingConditions (OverRecommendedOperatingFree-airTemperatureRange)
Parameter
Description
Min.
Max.
Units
VCC
Supply voltage
Supply voltage
4
5.5
BIASV
VIH
1.3
2
VCC
V
High-Level input voltage
Low-level input voltage
VIL
0.8
TA
Operating free-air temperature
40
85
°C
ElectricalCharacteristics(OverRecommendedOperatingFree-airTemperatureRange)
=
Parameter
Test Conditions
Min.
Typ
Max. Units
V
V
= 4.5V
= 5.5V
= 4.5V
= 5.5V
= 5.5V
I = 18mA
1.8
±5
V
IK
CC
I
I
I
V
CC
V = 5.5V or GND
I
µA
mA
µA
mA
I
O
V
CC
BIASV = 2.4V
V = 0
0.25
O
I
CC
V
CC
I
O
= 0
V = V or GND
I
100
2.5
CC
E
∆I
Control pins
Control pins
V
CC
One input at 3.4V, Other at V or GND
CC
CC
C
C
V =3V or 0
I
3.5
4.5
9
I
pF
(OFF)
V =3V or 0
O
Switch Off
O
V
CC
= 4V
V = 2.4V
I = 15mA
20
8
I
I
r
ON
*
V = 0,
I = 64mA
5.5
5
I
I
ohm
V
CC
= 4.5V V = 0,
I = 30mA
8
I
I
V = 2.4V
I
I = 15mA
I
9
15
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.
=
PS8369B
12/15/01
2
PI5C16215C
20-Bit,HotInsertion,BusSwitchwith
PrechargedOutputs&UndershootProtection
Truth Table
OE
L
Function
A port = B port
H
A port = Z, B Port = BIASV
SwitchingCharacteristics(OverRecommendedOperatingFree-airTemperatureRange,C =50pF)
L
VCC = 5V ± 0.5V
VCC = 4V
Min. Max.
From
(Input)
To
(Output)
Parameter
Test Conditions
Units
Min.
Max.
tPD
tPZH
tPZL
tPHZ
tPLZ
A or B
ON
B or A
A or B
0.25
0.25
6
BIASV = GND
BIASV = 3V
BIASV = GND
BIASV = 3V
3.1
3.0
2.0
3
5
5
5
5
6
ns
5.5
5.5
ON
A or B
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).
ParameterMeasurements
Test
S1
7V
Open
GND
S1
500
tpd
Open
7V
From Output
Under Test
t
/t
PLZ PZL
C
= 50pF
L
500
t
/t
Open
PHZ PZH
(See note 1)
3V
Output
Control
(Low Level
Enabling)
LOAD CIRCUIT
1.5V
1.5V
0V
t
PZL
t
PLZ
3V
0V
Output
Waveform 1
S1 at 6V
3.5V
1.5V
1.5V
Input
1.5V
VOL +0.3V
VOL
(see Note 2)
t
PLH
t
PHL
t
PZH
t
PHZ
Output
Waveform 2
S1 at Open
(see Note 2)
V
OH
V
OH
1.5V
1.5V
1.5V
VOH -0.3V
Output
VOL
0V
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
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.
PS8369B
12/15/01
3
PI5C16215C
20-Bit,HotInsertion,BusSwitchwith
PrechargedOutputs&UndershootProtection
48-pinBQSOP(B)
48
.150
.157
.228
.244
3.80
4.00
5.80
6.20
Gauge Plane
.020
.029
0.50
0.75
.010 0.25
BSC
1
.386
.394
9.80
.015 0.381
x 45˚
REF
.014 0.356
10.00
.008 0.20 Nom
Nom
1.60
.063
.079
2.0
Max
.002 0.05
.009 0.25
5˚
.0157 BSC
0.40
.0051
.009
0.13
0.23
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
48-pinTSSOP(A)
48
.236
.244
6.0
6.2
1
.488 12.4
.496 12.6
.047
1.20 Max
SEATING PLANE
0.09
0.20
.004
.008
0.45 .018
0.75 .030
.002
.006
0.05
0.15
.007
.010
.0197
BSC
.319
BSC
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
0.50
0.17
0.27
8.1
PS8369B
12/15/01
4
PI5C16215C
20-Bit,HotInsertion,BusSwitchwith
PrechargedOutputs&UndershootProtection
48-pinSSOP(V)
48
.395
.420
10.03
10.67
.291
.299
7.39
7.59
Gauge Plane
.010
0.25
.02
.04
0.51
1.01
1
.620
.630
15.75
16.00
0.381
0.635
.015
.025
x 45˚
.008
0.20
Nom.
.110 2.79 Max
.008 0.20
.0135 0.34
.025 BSC
0.635
.008 0.20
.016 0.40
0-8˚
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
OrderingInformation
Part
Pin - Package
48 - BQSOP (B48)
48 - TSSOP (A48)
Width
150-mil
240-mil
PI5C16215CB
PI5C16215CA
ApplicationsInformation
Logic Inputs
The logic control inputs can be driven up to +5.5V regardless of the
supplyvoltage. Forexample,givena+5.0Vsupply,INmaybedriven
lowto0Vandhighto5.5V. DrivingINRail-to-Rail®minimizespower
consumption.
Power-Supply Sequencing
Proper power-supply sequencing is recommended for all CMOS
devices. Always apply V before applying signals to the bias
CC
voltage pin and the input/output or control pins.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd
PericomSemiconductorCorporation
2380BeringDrive • SanJose, CA95131•1-800-435-2336 • Fax(408)435-1100• http://www.pericom.com
PS8369B
12/15/01
5
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