PI5C3400 [PERICOM]
4-Bit, 4-Port Bus Exchange Switch; 4位， 4端口总线交换开关
| 型号： | PI5C3400 |
| 厂家： | 
PERICOM SEMICONDUCTOR CORPORATION |
| 描述： | 4-Bit, 4-Port Bus Exchange Switch |
| 文件： | 总3页 (文件大小：60K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PI5C3400
4-Bit, 4-Port Bus Exchange Switch
Product Features:
• Zero propagation delay
ProductDescription:
Pericom Semiconductor’s PI5C series of logic circuits are pro-
duced in the Company’s advanced 0.8 micron CMOS technology,
achieving industry leading speed grades.
• Zero ground bounce in flow-through mode
• 5Ω switches connect inputs to outputs
ThePI5C3400isa4-bit,4-portbusswitchwithindividualexchanges
designed with a low ON resistance (5Ω) allowing inputs to be
connected directly to outputs. The bus switch creates no additional
propagational delay or ground bounce noise. The switches are
turned ON by the Bus Enable (BE) input signal, and the Bus
Exchange (BX0–BX3) input signals offer individual bit swapping
of the AB and CD signal pairs. This exchange configuration allows
bit swapping of buses in systems.
•
•
Direct bus connection when switches are ON
Ultra Low Quiescent Power (0.2 µA Typical)
– Ideally suited for notebook applications
• Packages available:
– 24-pin 300 mil wide plastic PDIP (P)
– 24-pin 150 mil wide plastic QSOP (Q)
– 24-pin 300 mil wide plastic SOIC (S)
Product Pin Configuration
Logic Block Diagram
A
B
0
C
0
0
BE
1
24
23
22
21
20
19
18
17
16
15
14
13
Vcc
D3
C
A
B
D
C
A
B
D
0
0
0
0
1
1
1
1
0
1
2
0
D
3
B
A
3
4
3
24-PIN
A
B
1
1
C
1
1
5
C
D
3
2
P
Q
S
D
6
7
B
A
2
2
A
B
2
2
C
2
2
8
D
9
C2
NC
10
11
12
BX
BX
BX
BX
3
A
B
3
3
C
3
3
GND
2
D
BX
BX
0
1
BX
BX
2
3
BE
Truth Table(1)
Note:
1. H
X
Function
Disconnect
Connect
BE
H
BX0
BX1
BX2
BX3
A0–3
Hi-Z
C0–3
D0–3
B0–3
Hi-Z
D0–3
C0–3
= High Voltage Level
= Don’t Care
X
X
X
X
L
= Low Voltage Level
L
BXi=L
BXi=H
Hi-Z = High Impedance
i
Exchange
L
= 0, 1, 2, or 3
PS8191
05/07/98
191
PI5C3400
4-BIT, 4-PORT BUS
EXCHANGESWITCH
ProductPinDescription
Pin Name
BE
Description
Bus Enable Input (Active LOW)
Ax, Bx, Cx, Dx Bus A, Bus B, Bus C, Bus D
BX0
BX1
BX2
BX3
NC
Bus Exchange (Bit 0)
Bus Exchange (Bit 1)
Bus Exchange (Bit 2)
Bus Exchange (Bit 3)
No Connect
GND
VCC
Ground
Power
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 (Inputs & Vcc Only) ..... –0.5V to +7.0V
Stresses greater than those listed under
MAXIMUMRATINGSmaycausepermanentdam-
age to the device. This is a stress rating only and
Supply Voltage to Ground Potential (Outputs & D/O Only) .. –0.5V to +7.0V functional operation of the device at these or any
other conditions above those indicated in the op-
erational sections of this specification is not im-
plied. Exposure to absolute maximum rating condi-
tions for extended periods may affect reliability.
DC Input Voltage ..................................................................... –0.5V to +7.0V
DC Output Current ............................................................................... 120 mA
Power Dissipation .................................................................................... 0.5W
DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 5V ±5%)
Parameters Description
TestConditions(1)
Min. Typ(2) Max. Units
VIH
VIL
IIH
Input HIGH Voltage
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
VCC = Max., VIN = VCC
VCC = Max., VIN =GND
0 ≤ A, B ≤ VCC
2.0
V
V
Input LOW Voltage
–0.5
0.8
±1
Input HIGH Current
µA
µA
µA
V
IIL
Input LOW Current
±1
IOZH
VIK
IOS
High Impedance Output Current
Clamp Diode Voltage
Short Circuit Current(3)
Input Hysteresis at Control Pins
Switch On Resistance(4)
±1
VCC = Min., IIN = –18 mA
A (B) = 0V, B (A) = VCC
–0.7
150
–1.2
100
mA
mV
Ω
VH
RON
VCC = Min., VIN = 0.0V, ION = 48 mA
VCC = Min., VIN = 2.4V, ION = 15 mA
5
10
7
15
Capacitance (TA = 25°C, f = 1 MHz)
Parameters(5)
Description
TestConditions
Typ
Max.
Units
CIN
Input Capacitance
VIN =0V
VIN =0V
6
6
pF
pF
COFF
A/B Capacitance, Switch Off
CON
A/B Capacitance, Switch On
VIN =0V
8
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 = 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.
5. This parameter is determined by device characterization but is not production tested.
PS8191
05/07/98
192
PI5C3400
4-BIT, 4-PORT BUS
EXCHANGESWITCH
PowerSupplyCharacteristics
Parameters Description
TestConditions(1)
Min. Typ(2) Max.
Units
ICC
Quiescent Power
Supply Current
VCC=Max.
VCC =Max.
VCC =Max.,
VIN =GNDorVCC
0.1
3.0
µA
∆ICC
ICCD
Supply Current per
Input@TTLHIGH
VIN =3.4V(3)
2.5
mA
Supply Current per
Input per MHz(4)
0.25
mA/
MHz
A and B Pins Open
BE=GND
Control Input Toggling
50%DutyCycle
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. TypicalvaluesareatVcc=5.0V,+25°Cambient.
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.
SwitchingCharacteristicsoverOperatingRange
PI5C3400
Com.
Parameters Description
Conditions(1)
Min.
Max.
Unit
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tBX
Propagation Delay(2,3)
CL = 50 pF
RL = 500Ω
0.25
ns
Ax to Cx, Bx to Dx
Bus Enable Time
BE to Cx or Dx
Bus Disable Time
BE to Cx or Dx
1.5
1.5
1.5
6.5
5.5
6.5
ns
ns
ns
BusExchangeTime
BXX to Cx or Dx
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 0.25 ns for 50 pF 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.
Pericom Semiconductor Corporation
2380BeringDrive • SanJose,CA95131•1-800-435-2336 • Fax(408)435-1100• http://www.pericom.com
PS8191
05/07/98
193
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