ETC PI3B16211

PI3B16211
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3.3V, Hot Insertion, 24-Bit BusSwitch
Product Features
Product Description
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Pericom Semiconductor’s PI3B series of logic circuits are produced
using the Company’s advanced submicron CMOS technology.
Near-zero propagation delay
5-ohm switches connect inputs to outputs
Fast Switching Speed - 4.5ns max.
Permits Hot Insertion
VCC operating range: 3.0V to 3.6V
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)
– 56-pin 173-mil wide thin plastic TVSOP (K)
The PI3B16211 is a 3.3 volt, hot insertion, 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 as 12-bit bus switch
that provides high-speed bus switching.
Product Pin Configuration
Logic Block Diagram
1A1
12B1
1A12
1B12
1OE
2A1
2B1
2A12
2B12
2OE
Truth Table
NC
1
56
1OE
1A1
2
55
2OE
1A2
3
54
1B1
1A3
4
53
1B2
1A4
5
52
1B3
1A5
6
51
1B4
1A6
7
50
1B5
GND
8
49
GND
1A7
9
48
1B6
1A8
10
47
1B7
1A9
11
46
1B8
1A10
12
45
1B9
1A11
13
1A12
56-Pin 44
A,
V, K 43
14
1B10
1B11
1OE
2OE
1A, 1B I/Os
2A, 2B I/Os
2A1
15
42
1B12
L
L
1A = 1B
2A = 2B
2A2
16
41
2B1
L
H
1A = 1B
Z
VCC
17
40
2B2
H
L
Z
2A = 2B
2A3
18
39
2B3
H
H
Z
Z
GND
19
38
GND
2A4
20
37
2B4
2A5
21
36
2B5
2A6
22
35
2B6
2A7
23
34
2B7
2A8
24
33
2B8
2A9
25
32
2B9
2A10
26
31
2B10
2A11
27
30
2B11
2A12
28
29
2B12
Note:
1. H = High Voltage Level
L = Low Voltage Level
Z = High Impedance
Product Pin Description
Pin Name
1O E, 2O E
I/O
I
D e s cription
Select Inputs
xAx
I/O
Bus A
xBx
I/O
Bus B
1
PS8176C
07/31/01
PI3B16211
3.3V, Hot Insertion,
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 ........................ –0°C to +85°C
Supply Voltage Range ....................................................... –0.5V to +4.6V
DC Input Voltage ............................................................... –0.5V to +4.6V
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 = 3.0V to 3.6V
Parame te rs
Te s t Conditions (1)
D e s cription
M in.
Typ.(2)
M ax.
VIH
Input HIGH Voltage
Guaranteed Logic High Level
2.0
VIL
Input LO W Voltage
Guaranteed Logic Low Level
–0.5
IIH
Input HIGH Current
VCC = Max.; VIN = VCC
±1
IIL
Input LO W Current
VCC = Max.; VIN = GND
±1
IOZH
High Impedance O utput Current 0 ≤ A, B ≤ VCC
VIK
Clamp Diode Voltage
RON
Switch O N
Resistance(3)
Units
V
0.8
µA
±1
VCC = Min, IIN = –18mA
–0.7
–1.2
V
VCC = Min., VIN = 0.0V, ION = 48mA or 64mA
VCC = Min., VIN = 2.4V, ION = 15mA
5
10
8
15
Ω
Capacitance (TA = 25°C, f = 1 MHz)
Parame te rs (5)
CIN
De s cription
Te s t Conditions
Input Capacitance
C O FF
A/B Capacitance, Switch Off
CON
A/B Capacitance, Switch On
Typ.
Units
3.0
VIN = 0V
8.5
pF
17.0
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. 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.
4. This parameter is determined by device characterization but is not production tested.
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PS8176C
07/31/01
PI3B16211
3.3V, Hot Insertion,
24-Bit Bus Switch
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Power Supply Characteristics
Parame te rs
Te s t Conditions (1)
D e s cription
M in.
ICC
Q uiescent Power Supply Current
VCC = Max.
VIN = GND
or VCC
∆ICC
Supply Current per Input @ TTL High
VCC = Max.
VIN = 3.0V(3)
ICCD
Supply Current per Input per MHz(4)
VCC = Max.
A & B Pin O pen
Control Input Toggling
50% Duty Cycle
Typ(2)
M ax.
Units
10
µA
750
0.25
mA/
MHz
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.
4. This current applies to the control inputs only and represent the current required to switch internal capacitance at the specified
frequency. The A and B inputs generate no significant AC or DC currents as they transition. This parameter is not tested, but is
guaranteed by design. RL = 500 ohms, R = 500 ohms(4)
Switching Characteristics over Operating Range
Com.
Parame te rs
Conditions (1)
D e s cription
M ax.
Delay(2,3)
tPLH
tPHL
Propagation
Ax to Bx, Bx to Ax
tPZH
tPZL
Bus Enable Time
BE to Ax or Bx
tPHZ
tPLZ
Bus Disable Time
BE to Ax or Bx
CL = 50pF,
RL = 500 ohms
R = 500 ohms
M in.
Units
0.25
1
4.5
1
5.0
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.
4. Applies to tPZX, tPXZ.
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PS8176C
07/31/01
PI3B16211
3.3V, Hot Insertion,
24-Bit Bus Switch
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56-Pin TSSOP (A) Package
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
.025 BSC
0.635
X.XX DENOTES DIMENSIONS
X.XX IN MILLIMETERS
.008
.0135
0.20
0.34
4
0-8˚
.008 0.20
.016 0.40
PS8176C
07/31/01
PI3B16211
3.3V, Hot Insertion,
24-Bit Bus Switch
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56-Pin TVSOP (K) Package
56
.169
.177
4.30
4.50
0.09
0.20
.0035
.008
1
.441
.449
0.45 .018
0.75 .030
.031
.041
0.80
1.05
11.20
11.40
.252
BSC
6.4
SEATING
PLANE
.016
BSC
0.40
X.XX
X.XX
.002
.006
0.05
0.15
.005
.009
0.13
0.23
.047
1.20
Max.
DENOTES DIMENSIONS
IN MILLIMETERS
Part
Pin
PI3B16211A
PI3B16211V
PI3B16211K
56
Package
Width
TSSOP
240- mil
SSO P
300- mil
TVSO P
173- mil
Te mpe rature
–40°C to 85°C
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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PS8176C
07/31/01