Page 1
1
PS8409D 03/19/01
Product Description
Pericom Semiconductors PI3C series of logic circuits are produced
using the Companys advanced submicron CMOS technology,
achieving industry leading performance.
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).
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.
BIASV
1
1A1
2
1A2
3
1A3
4
1A4
5
1A5
6
1A6
7
GND
GND
8
1A7
9
1A8
10
1A9
11
1A10
12
2A1
13
2A2
14
V
CC
15
2A3
16
2A4
17
2A5
18
2A6
19
2A7
20
2A8
21
2A9
22
2A10
23
24
1OE
2OE
1B1
1B2
1B3
1B4
1B5
GND
1B6
48
1B7
47
1B8
46
1B9
45
1B10
44
2B1
43
2B2
42
2B3
41
GND
40
2B4
39
2B5
38
2B6
37
2B7
36
2B8
35
2B9
34
2B10
33
32
31
30
29
28
27
26
25
Product Pin Configuration
Logic Diagram
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
1
234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901
2
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
PI3C16215
3.3V, 2-Port, 20-Bit Bus Switch
with Precharged Outputs
for Live Insertion
Product Features
Near zero propagation delay
5-ohm switch connection between two ports
High Bandwidth (>200 MHz)
Rail-to-Rail 3.3V Switching
Outputs are precharged by bias voltage to
minimize signal distortion during live insertion
5V I/O Tolerant
Package options:
48-pin 150 mil wide plastic BQSOP (B)
48-pin 240 mil wide plastic TSSOP (A)
EOnoitcnuF
LtropB=tropA
HVSAIB=tropA,Z=tropA
Truth Table
Note:
1. H= High Voltage Level 2. L= Low Voltage Level
2B1
2
B10
2
OE
1B1
1
B10
BIASV
1
OE
SW
SW
SW
SW
1
A
1
1
A
10
2
12
48
13
24
47
25
35
46
36
1
48-Pin
A,B
Page 2
2
PS8409D 03/19/01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
PI3C16215
3.3V, 2-Port, 20-Bit Bus Switch with
Precharged Outputs for Live Insertion
Electrical Characteristics (Over Recommended Operating Free-Air Temperature Range)
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
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 Conditions
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.
Absolute Maximum Ratings Over Free-Air Temperature Range
*
(Above which the useful life may be impaired. For user guidelines, not tested.)
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.
sretemaraPnoitpircseDsnoitidnoCtseT.niMpyT .
.xaMstinU
V
KI
egatloVedoiDpmalCV
CC
I,V0.3=
NI
81=mA 37.02.1V
I
I
tnerruCtupnIV
CC
,V6.3=VNIV=
CC
DNGro5±
µA
I
O
tnerruCtuptuOVCCV,V4.2=VSAIB,V0.3=
O
0=52.0Am
I
CC
tnerruCylppuSrewoPtnecseiuQV
CC
I,V6.3=
O
,0=VNIV=
CC
DNGro062058
µA
∆I
CC
tupnIreptnerruCylppuSrewoP
V
CC
,V6.3=V7.2tatupnienO
tarehtOVCCDNGro
5.2Am
C
NI
ecnaticapaCtupnIV
CC
V0=5.3
Fp
C
FFO
ecnaticapaCB/AV
CC
,V0=ffOhctiwS0.5
R
NO
*
ecnatsiseRnohctiwSV
CC
V0.3=
V
NI
I,0=
NI
46=Am55.8
Ω
V
NI
I,V4.2=
NI
03=Am0.851
V
NI
I,V4.2=
NI
51=Am0.851
.niM.xaMstinU
V
CC
egatlovylppuS0.33.3
V
VSAIBegatlovylppuS3.1V
CC
V
HI
egatlovtupnilevel-hgiH2
V
LI
egatlovtupnilevel-woL8.0
T
A
erutarepmetria-eerfgnitarepO0458C°
Page 3
3
PS8409D 03/19/01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
PI3C16215
3.3V, 2-Port, 20-Bit Bus Switch with
Precharged Outputs for Live Insertion
Switching Characteristics (Over Recommended Operating Free-air Temperature Range, C
L
= 50pF)
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).
Parameter Measurements
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
tseT1S
t
DP
nepO
t
ZLP
t/
LZP
V6
t
ZHP
t/
HZP
DNG
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, Z
O
= 50Ω, tR ≤ 2.5ns, tF ≤ 2.5ns.
4. The outputs are measured one at a time with one transition per measurement.
5. t
PLZ
and t
PHZ
are the same as t
DIS
.
6. t
PZL
and t
PZH
are the same as tEN.
7. t
PLH
and t
PHL
are the same as tPD.
t
PZL
Output
Control
(Low Level
Enabling)
0V
1.5V
1.5V
1.5V
1.5V
t
PLZ
t
PHZ
V
OL
3.5V
0V
t
PZH
+0.3V
-0.3V
Output
Waveform 1
S1 at 6V
(see Note 2)
Output
Waveform 2
S1 at Open
(see Note 2)
V
OH
V
OH
V
OL
3V
retemaraPsnoitidnoCtseT
)tupnI(morF)tuptuO(oT
.niM.xaMstinU
t
DP
)1(
BroAAroB52.0
sn
t
HZP
DNG=VSAIB
NOBroA
5.15.6
t
LZP
V3=VSAIB5.15.6
t
ZHP
DNG=VSAIB
NOBroA
5.15.5
t
ZLP
V3=VSAIB5.15.5
500
Ohm
500
Ohm
6V
Open
GND
S1
LOAD CIRCUIT
From Output
Under Test
CL = 50pF
(See note 1)
Page 4
4
PS8409D 03/19/01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
PI3C16215
3.3V, 2-Port, 20-Bit Bus Switch with
Precharged Outputs for Live Insertion
Ordering Information
traPegakcaP-niPhtdiWerutarepmeT
A51261C3IP)84A(POSST-84lim-042
Cº58+otCº04
B51261C3IP)84B(POSQB-84lim-042
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
48-Pin TSSOP (A) Package
48-Pin BQSOP (B) Package
.236
.244
.488
.496
.002
.006
SEATING PLANE
.007
.010
.0197
BSC
.004
.008
.319
1
48
12.4
12.6
6.0
6.2
0.50 0.17
0.27
8.1
0.05
0.15
0.09
0.20
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
.018
.030
0.45
0.75
.047
1.20 Max
BSC
.014
.0157 BSC
0.40
0.356
.008 0.20
.002
.009
5˚
0.05
0.25
.079
2.0
.010
0.25
Gauge Plane
.150
.157
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
3.80
4.00
.228
.244
5.80
6.20
.020
.029
0.50
0.75
.063
1.60
.015 0.381
.386
.394
9.80
10.00
.0051
.009
0.13
0.23
1
48
x 45˚
BSC
Nom
Max
Nom
REF
Applications Information
Logic Inputs
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.
Power-Supply Sequencing
Proper power-supply sequencing is recommended for all CMOS
devices. Always apply VCC before applying V
BIAS
and signals to
input/output or control pins.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd
Loading...