PI5C34EX245BEX [PERICOM]
Bus Driver, CBT/FST/QS/5C/B Series, 4-Func, 8-Bit, True Output, CMOS, PDSO80, 0.150 INCH, PLASTIC, BQSOP-80;
| 型号： | PI5C34EX245BEX |
| 厂家： | 
PERICOM SEMICONDUCTOR CORPORATION |
| 描述： | Bus Driver, CBT/FST/QS/5C/B Series, 4-Func, 8-Bit, True Output, CMOS, PDSO80, 0.150 INCH, PLASTIC, BQSOP-80 驱动 光电二极管 逻辑集成电路 |
| 文件： | 总4页 (文件大小：429K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PI5C34X245
32-Bit, 2-Port Bus Switch
Features
Description
• Near-Zero propagation delay
The PI5C34X245 is a 32-bit, 2-port bus switch. Four enable signals
(BEn) turn the switches on. The bus switch creates no additional
propagational delay or additional ground bounce noise.
• 5Ω switches connect inputs to outputs
• Direct bus connection when switches are ON
• Ultra-low quiescent power (0.2µA typical)
– Ideally suited for notebook applications
• Industrial operating temperature: –40°C to +85°C
• Packaging (Pb-free & Green available):
– 80-pin BQSOP (B)
Pin Configuration
Block Diagram
1
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
NC
A0
A1
A2
A3
A4
A5
A6
A7
VCC
BE1
B0
B1
B2
B3
B4
B5
B6
A0
B0
B7
2
3
4
5
A7
BE1
A8
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
GND
NC
A8
B7
VCC
BE2
B8
B8
A9
A10
A11
A12
A13
A14
A15
GND
NC
A16
A17
A18
A19
A20
A21
A22
A23
GND
NC
A24
A25
A26
A27
A28
A29
A30
A31
GND
B9
B10
B11
B12
B13
B14
B15
VCC
BE3
B16
B17
B18
B19
B20
B21
B22
B23
VCC
BE4
B24
B25
B26
B27
B28
B29
B30
B31
A15
B15
BE2
A16
B16
A23
BE3
A24
B23
B24
A31
B31
BE4
PS7058H
05/12/06
06-0238
1
PI5C34X245
32-Bit, 2-Port Bus Switch
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Note:
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 +7.0V
DC Input Voltage ..................................................................–0.5V to +7.0V
DC Output Current............................................................................120 mA
Power Dissipation.................................................................................0.5W
Stresses greater than those listed under MAXIMUM RAT-
INGS 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. Ex-
posure to absolute maximum rating conditions for extended
periods may affect reliability.
(1)
Pin Description
Truth Table
Function
Pin Name
I/O Description
BEn
H
A0-A31
Hi-Z
BE
I
Bus Enable Input (Active LOW)
Disconnect
Connect
X
A -A
I/O Bus A
I/O Bus B
L
B0-31
0
31
B -B
Note:
0
31
1. H = High Voltage Level
L = Low Voltage Level
Hi-Z = High Impedance
DC Electrical Characteristics (Over the Operating Range, T = –40°C to +85°C, V = 5V ±10%)
A
(1)
CC
(2)
Parameters Description
Test Conditions
Min.
Typ
Max. Units
V
Input HIGH Voltage
Input LOW Voltage
Input HIGH Current
Input LOW Current
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
2.0
IH
V
V
–0.5
0.8
IL
I
V
V
= Max., V = V
CC
±1
IH
CC
CC
IN
I
= Max., V = GND
±1
±1
µA
IL
IN
I
High Impedance Output Current 0 - A, B - V
CC
OZH
V
Clamp Diode Voltage
V
= Min., I = –18mA
–0.7
–1.2
V
mA
V
IK
CC
IN
(3)
I
Short Circuit Current
A (B) = 0V, B (A) = V
100
OS
CC
V
Input Hystersis at Control Pins
H
V
= Min., V = 0V, I = 48mA
5
7
CC
IN
ON
(4)
R
ON
Switch On-Resistance
Ω
V
= Min., V = 2.4V, I = 15mA
10
15
CC
IN
ON
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 = 5.0V, 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.
2
06-0238
PS7058H
05/12/06
PI5C34X245
32-Bit, 2-Port Bus Switch
Capacitance (T = 25°C, f = 1 MHz)
A
(1)
Paramaters
Description
Test Conditions
Max.
Units
C
C
C
Input Capacitance
6
6
IN
A/B Capacitance, Switch OFF
A/B Capacitance, Switch ON
V
= 0V
IN
pF
OFF
ON
12
Notes:
1. This parameter is determined by device characterization but is not production tested.
Power Supply Characteristics
(1)
(2)
Parameters
Description
Test Conditions
Min. Typ
Max. Units
V
or V
= GND
IN
I
Quiescent Power Supply Current
V
= Max.
0.1
3.0
2.5
µA
CC
CC
CC
Supply Current per Input @ TTL
HIGH
(3)
∆I
V
V
= Max.
= Max.,
V = 3.4V
IN
mA
CC
CC
CC
A & B Pins Open
Control Input Toggling
50% Duty Cycle
mA/
MHz
(4)
I
Supply Current per Input per MHz
0.25
CCD
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at VCC = 5.0V, +25°C ambient.
3. Per TTL driven input (VIN = 3.4V, 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.
Switching Characteristics over Operating Range
PI5C34X245
Parameter
Description
Conditions
Com.
Units
Min.
Max.
(1,2)
t
t
Propagation Delay
PLH
0.25
Ax to Bx, Bx to Ax
PHL
t
t
C = 50pF
L
R = 500Ω
L
PZH
Bus Enable Time BEx to Ax or Bx
1.5
1.5
5.6
5.2
ns
PZL
t
t
PHZ
Bus Disable Time BEx to Ax or Bx
PLZ
Notes:
1. This parameter is guaranteed but not tested on Propagation Delays.
2. 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.
3
06-0238
PS7058H
05/12/06
PI5C34X245
32-Bit, 2-Port Bus Switch
Packaging Mechanical: 80-Pin, 150 Mil Wide Plastic BQSOP (B)
80
41
.228
.244
.150
.157
3.80
4.00
5.80
6.20
.008 NOM
0.203
Gauge Plane
5˚
.010
0.254 BSC
.019 0.50
.029 0.75
1
40
0.803
0.811
20.40
20.60
0.50
REF
.010 0.254
.016 0.406
x 45˚
.019
.063
1.60
Nom
.078
2.0
Max
5˚
.007
.010
0.17
0.27
.0197
0.50
.002
.009
0.05
0.25
BSC
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
Ordering Information
Ordering Code
Packaging Code
Package Type
PI5C34X245B
B
B
80-Pin 150 Mil Wide Plastic BQSOP
Pb-free & Green, 80-Pin 150 Mil Wide Plastic BQSOP
PI5C34X245BE
Notes:
•
•
Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
E = Pb-free & Green
• Adding an X suffix = Tape/Reel
Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com
4
06-0238
PS7058H
05/12/06
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