ETC PI3C34X484

PI3C34X484
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3.3V, High Bandwidth, Hot Insertion
40-Bit, 2-Port, Bus Switch
Product Features
Product Description
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Pericom Semiconductor’s PI3C series of logic circuits are produced
using the Company’s advanced submicron CMOS technology,
achieving industry leading performance.
Near-zero propagation delay
5-ohm switches connect inputs to outputs
High Bandwidth (>200 MHz)
Permits Hot Insertion.
Rail-to-Rail, 3.3V Switching
5V I/O Tolerant
Packages available:
– 96-pin Low Profile Fine Pitch Ball Grid Array (NB96)
The PI3C34X484 is a 3.3 Volt, high-bandwidth 40-bit, 2-port bus
switch designed with a low ON resistance allowing inputs to be
connected directly to outputs. The bus switch creates no additional
propagational delay or additional ground bounce noise. The switches
are turned ON by the Bus Enable (BE) input signal. Eight bus
enable signals are provided, one for each of the upper and lower five
bits of the four 10-bit buses.
Applications
• High Bandwidth Data switching
• Hot Docking
Logic Block Diagram
Product Pin Description
1A0
1B0
2A0
2B0
1A4
1B4
2 A4
2B4
1A5
1B5
2A5
2B5
1A9
1B9
2A9
2B9
Pin Name
D e s cription
NA0
- NA9
Bus A
NB0
- NB9
Bus B
NBEA, NBEB
Bus Enable Pins (Active LO W)
NGN D
Ground
NVCC
Power
Note: N = 1 through 4 for each set of 10 bit buses
2BEA
1BEA
2BEB
1BEB
3A0
3B0
4A0
3A4
3B4
4 A4
4B4
3A5
3B5
4A5
4B5
3A9
3B9
4A9
4B9
3BEA
3BEB
Truth Table(1)
4B0
Function
NBEA
NBEB
B0– B4
B5– B9
Disconnect
H
H
Hi- Z
Hi- Z
Connect
L
H
A0–A4
Hi- Z
Connect
H
L
Hi- Z
A5–A9
Connect
L
L
A0–A4
A5–A9
Note:
1. H = High Voltage Level
X = Don’t Care,
L = Low Voltage Level
Hi-Z = High Impedance
4BEA
4BEB
1
PS8406B
05/01/01
PI3C34X484
3.3V, High Bandwidth, Hot Insertion,
40-Bit, 2-Port Bus Switch
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Product Pinout by Name
Name
Ball Pad
Name
Ball Pad
Name
Ball Pad
Name
Ball Pad
1A0
A2
2A0
E2
3A0
J2
4A0
N2
1B0
A3
2B0
E3
3B0
J3
4B0
N3
1A1
A1
2A1
E1
3A1
J1
4A1
N1
1B1
B2
2B1
F2
3B1
K2
4B1
P2
1A2
C2
2A2
G2
3A2
L2
4A2
R2
1B2
B1
2B2
F1
3B2
K1
4B2
P1
1A3
C1
2A3
G1
3A3
L1
4A3
R1
1B3
D2
2B3
H2
3B3
M2
4B3
T2
1A4
D3
2A4
H3
3A4
M3
4A4
T3
1B4
D1
2B4
H1
3B4
M1
4B4
T1
1A5
D4
2A5
H4
3A5
M4
4A5
T4
1B5
D6
2B5
H6
3B5
M6
4B5
T6
1A6
C6
2A6
G6
3A6
L6
4A6
R6
1B6
D5
2B6
H5
3B6
M5
4B6
T5
1A7
C5
2A7
G5
3A7
L5
4A7
R5
1B7
B6
2B7
F6
3B7
K6
4B7
P6
1A8
A6
2A8
E6
3A8
J6
4A8
N6
1B8
B5
2B8
F5
3B8
K5
4B8
P5
1A9
A5
2A9
E5
3A9
J5
4A9
N5
1B9
A4
2B9
E4
3B9
J4
4B9
N4
1BEA
B3
2BEA
F3
3BEA
K3
4BEA
P3
1BEB
C4
2BEB
G4
3BEB
L4
4BEB
R4
1VCC
B4
2VCC
F4
3VCC
K4
4VCC
P4
1GN D
C3
2GN D
G3
3GN D
L3
4GN D
R3
2
PS8406B
05/01/01
PI3C34X484
3.3V, High Bandwidth, Hot Insertion,
40-Bit, 2-Port Bus Switch
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Product
Pinout:
96-Pin(N96)
LFBGA
(NB) Package
Product Pinout
[LFBGA
Package]
1
2
3
4
5
6
A
1A1
1A0
1B0
1B9
1A9
1A8
B
1B2
1B1
1BEA
1VCC
1B8
1B7
C
1A3
1A2
1GND
1BEB
1A7
1A6
D
1B4
1B3
1A4
1A5
1B6
1B5
E
2A1
2A0
2B0
2B9
2A9
2A8
F
2B2
2B1
2BEA
2VCC
2B8
2B7
G
2A3
2A2
2GND
2BEB
2A7
2A6
H
2B4
2B3
2A4
2A5
2B6
2B5
J
3A1
3A0
3B0
3B9
3A9
3A8
K
3B2
3B1
3BEA
3VCC
3B8
3B7
L
3A3
3A2
3GND
3BEB
3A7
3A6
M
3B4
3B3
3A4
3A5
3B6
3B5
N
4A1
4A0
4B0
4B9
4A9
4A8
P
4B2
4B1
4BEA
4VCC
4B8
4B7
R
4A3
4A2
4GND
4BEB
4A7
4A6
T
4B4
4B3
4A4
4A5
4B6
4B5
3
PS8406B
05/01/01
PI3C34X484
3.3V, High Bandwidth, Hot Insertion,
40-Bit, 2-Port 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 .................... –40°C to +85°C
Supply Voltage to Ground Potential ................................ –0.5V to +4.6V
DC Input Voltage .............................................................. –0.5V to +4.6V
DC Output Current ......................................................................... 120mA
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 = 3.3V ±10%)
Parame te rs
Te s t Conditions (1)
De s cription
M in.
Typ.(2)
M ax.
VIH
Input HIGH Voltage
Guaranteed Logic HIGH Level
2.0
—
—
VIL
Input LOW Voltage
Guaranteed Logic LOW Level
–0.5
—
0.8
IIH
Input HIGH Current
VCC = Max., VIN = VCC
—
—
±1
IIL
Input LOW Current
VCC = Max., VIN = GND
—
—
±1
IOZH
High- Impedence Output Current
0 ≤A, B ≤VCC
—
—
±1
VIK
Clamp diode Voltage
VCC = Min., IIN = –18mA
—
–0.73
–1.2
(4)
RON
Switch On Resistance
VCC = Min.,VIN = 0.0V
ION = 48mA or 64mA
PI3C34X484
—
5
7
VCC = Min.,VIN = 2.4V
ION = 15mA
PI3C34X484
—
8
15
Units
V
µA
V
Ω
Capacitance (TA = 25°C f = 1 MHz)
Parame te rs (5)
De s cription
CIN
Input Capacitance
C O FF
A/B Capacitance, Switch Off
CON
A/B Capacitance, Switch On
Te s t Conditions
Typ.
Units
3.5
VIN = 0V
5.0
pF
10.0
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. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
4. 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.
5. This parameter is determined by device characterization but is not production tested.
4
PS8406B
05/01/01
PI3C34X484
3.3V, High Bandwidth, Hot Insertion,
40-Bit, 2-Port Bus Switch
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Power Supply Characteristics
Parame te rs
Te s t Conditions (1)
De s cription
ICC
Quiescent Power Supply Current
VCC = Max.,
VIN = GND or VCC
∆ICC
Supply Current per Input
@ TTL HIGH
VCC = Max.,
VIN = 3.0V(3)
M in.
Typ.(2)
M ax.
Units
—
1.0
2
mA
—
—
750
µA
PI3C34X484
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.
PI3C34X484 Switching Characteristics over 3.3V Operating Range
PI3C34X484
Parame te rs
De s cription
tPLH
tPHL
Propagation Delay(2,3)
Ax to Bx, Bx to Ax
tPZH
tPZL
Bus Enable Time
BEx to Ax or Bx
tPHZ
tPLZ
Bus Disable Time
BEx to Ax or Bx
Conditions
(1)
CL = 50pF
RL = 500Ω
CL = 50pF
RL = 500Ω
R = 500Ω
Units
Com.
M in.
M ax.
—
0.25
1.5
6.5
1.5
5.5
ns
PI3C34X484 Switching Characteristics over 2.5V Operating Range
PI3C34X484
Parame te rs
De s cription
tPLH
tPHL
(2,3)
Propagation Delay
Ax to Bx, Bx to Ax
tPZH
tPZL
Bus Enable Time
BEx to Ax or Bx
tPHZ
tPLZ
Bus Disable Time
BEx to Ax or Bx
Conditions
(1)
CL = 50pF
RL = 500Ω
CL = 50pF
RL = 500Ω
R = 500Ω
Units
Com.
M in.
M ax.
—
0.25
1.5
9.8
1.5
8.3
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.
5
PS8406B
05/01/01
PI3C34X484
3.3V, High Bandwidth, Hot Insertion,
40-Bit, 2-Port Bus Switch
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96-Pin LFBGA (NB) Package
Pin 1
Pin 1
FIDUCIAL MARK
5.50 ± 0.15
//
0.10
C
FIDUCIAL MARK
SEATING PLANE
0.10
C
A
6
5
4
3
2
1
A
B
C
C
D
E
F
13.50 ± 0.15
0.80
G
H
J
K
L
M
N
P
R
T
0.75
0.40 ± 0.05
0.75
0.85 Min.
1.40 Max.
B
96 x
φ0.40 ± 0.07
0.20 s
C A s
0.08 s
C
B s
Applications Information
Logic Inputs
Logic control inputs can be driven up to +3.6V regardless of the supply voltage. For example, given a +3.3V supply, the output
enables or select pins 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 advised for all CMOS devices. It is recommended to always apply VCC before applying signals
to the input/output or control pins.
Ordering Information
Part
Pin - Package
D ime ns ions
PI3C34X484NB
96 - LFBGA (NB96)
5.5mm x 13.5mm
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
6
PS8406B
05/01/01