PERICOM PI3C16234A

PI3C16234
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3.3V, High Bandwidth, 16-Bit to 32-Bit
Mux/Demux BusSwitch
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.
RON is 9 Ohm Typical
Pulldown on B Ports
Low Power: 1mW
Industrial Operation Temperature: –40ºC to 85ºC
Near Zero Propagation Delay
Switching Speed: 4.5ns max. (for 3.3V operation)
Channel ON capacitance: 9pF (typ.)
VCC Operating Range: +2 to +3.6V
>100 MHz Bandwidth
Packages: 56-Pin TSSOP
The PI3C16234 is a 16-bit to 32-bit mux/demux switch. Industry
leading advantages include almost zero propagation delay of 500ps
because of the 9ohm channel resistance and low I/O
capacitance. A1 port demultiplexes to either port B1 or B2 and the
switch is bidirectional.
Application
Private Memory Module Switching
Product Pin Configuration
Logic Block Diagram
1A1
NC
1B1
2B1
2A1
3B1
4B1
4A1
GND
5B1
6B1
6A1
7B1
8B1
8A1
9B1
10B1
10A1
11B1
12B1
12A1
VCC
13B1
14B1
14A1
15B1
16B1
16A1
SEL
1B1
1B2
16A1
16B1
16B2
SEL
Function Table
Se le ction
Function
L
nΑl to nΒl
H
nΑl to nΒ2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
56-Pin
A
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
VCC
1A1
1B2
2B2
3A1
3B2
4B2
GND
5A1
5B2
6B2
7A1
7B2
8B2
9A1
9B2
10B2
11A1
11B2
12B2
GND
13A1
13B2
14B2
15A1
15B2
16B2
NC
Note: n = 1–16
1
PS8459D
03/13/01
PI3C16234
3.3V, High Bandwidth, 16-Bit to 32-Bit Mux/Demux BusSwitch
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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 Range ....................................................... –0.5V to +4.6V
DC I/O Voltage ................................................................... –0.5V to +5.5V
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= –40ºC to 85ºC VCC = 3.3V ±10%)
Parameters Description
Test Conditions(1)
Min.
Typ(1)
Max.
Units
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
IO
B-port Pulldown Current
2.5
3.6
–
mA
VIK
Clamp Diode Voltage
RON
Switch On Resistance(4)
VCC = Min., VO = VCC
SEL = High for B1, SEL = Low for B2
VCC = Min., IIN = –18mA
VCC = Min., VIN = 0.0V,
ION = 48mA or 64mA
VCC = Min., VIN = 2.4V,
ION =15mA
–
–
–0.73
9
–1.2
12
Ω
–
16
23
V
µA
Capacitance (TA = 25°C, f = 1 MHz)
Parameters(5)
Description
Test Conditions
CIN
CON
Input Capacitance
A/B Capacitance, Switch On
VIN = 0V
VIN = 0V
Typ.
3.5
9.3
Max.
Units
–
11
pF
pF
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 pins 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.
2
PS8459D
03/13/01
PI3C16234
3.3V, High Bandwidth, 16-Bit to 32-Bit Mux/Demux BusSwitch
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Power Supply Characteristics
Parame te rs
ICC
DICC
Te s t Conditions (1)
De s cription
M in.
Typ.(2)
M ax.
Quiescent Power Supply Current
VCC = Max.
VIN = GND or VCC
—
260
850
Supply Current per Input @ TTL HIGH
VCC = Max.
VIN = 3.0V(3)
—
—
750
Units
µA
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.
PI3C16234 Switching Characteristics over Operating Range
PI3C16234
Com
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)
M in.
M ax.
CL = 50pF
RL = 500Ω
—
0.50
1.5
6.5
1.5
5.5
CL = 50pF
RL = 500Ω
R = 500Ω
Units
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 0.5ns for 25pF 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.
3
PS8459D
03/13/01
PI3C16234
3.3V, High Bandwidth, 16-Bit to 32-Bit Mux/Demux BusSwitch
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56-Pin TSSOP (A) Package
56
.236
.244
1
.547
.555
6.0
6.2
13.9
14.1
1.20
.047
Max.
SEATING PLANE
.004 0.09
.008 0.20
.0197
BSC
0.50
.007
.011
0.17
0.27
X.XX DENOTES DIMENSIONS
X.XX IN MILLIMETERS
.002
.006
0.05
0.15
0.45 .018
0.75 .030
.319 BSC
8.1
Ordering Information
Part
PI3C16234A
Pin - Package
Width
Te mpe rature
56- TSSOP (A56) 240- mil –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
4
PS8459D
03/13/01