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VS32257Q の電気的特性と機能

VS32257QのメーカーはVaishali Semiconductorです、この部品の機能は「Quad 2:1 Mux/Demux VSwitch」です。


製品の詳細 ( Datasheet PDF )

部品番号 VS32257Q
部品説明 Quad 2:1 Mux/Demux VSwitch
メーカ Vaishali Semiconductor
ロゴ Vaishali Semiconductor ロゴ 




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VS32257Q Datasheet, VS32257Q PDF,ピン配置, 機能
VS3257 / VS32257
Quad 2:1 Mux/Demux VSwitch
Applications
= 5V to 3.3V translation in mixed-supply
environment
= Hot-swap interface
= Logic replacement
= Memory bank, video, & audio
swtiching
= Power conservation
General Description
The VS3257 is a high-speed TTL–compatible Quad 2:1 multiplexer/demultiplexer. The VS3257 contains four
mux/demux channels, with a common path control (S) and active low enable (/E). The low ON resistance of
the VS3257 allows inputs to be connected to outputs, without adding propagation delay and without
generating additional signal noise. The VS32257 has 25resistors in series with the switches to reduce
ground-bounce noise and signal reflection.
The VS3257 and VS32257 mux/demux switches are function and pinout compatible with QS3257 and
CBT3257 switches. They enable 5V to 3.3V translation when used with an external diode in the power supply
line. In addition, the high off-isolation in the ‘disable’ mode makes VS3257 and VS32257 ideal interface
elements for hot-swap applications.
Features
= Enhanced N-FET with no DC path to VCC
or GND in normal operating signal voltage
range.
= Low impedance bidirectional data flow:
5(VS3257) and 25(VS32257)
= Pin-compatible with QS3257 and CBT3257
switches.
= Near zero propagation delay
= Zero added ground bounce or signal noise
= Break-before-make feature
= TTL-compatible control signals
= Undershoot clamp diodes on all switch and
control pins
= ESD rating >2000V (Human Body Model)
or >200V (Machine Model)
= Latch-up current >100mA
= Available in 150-mil wide QSOP package
Figure 1. Functional Block Diagram
S
/E
YA
YB
YC
YD
Figure 2. Pin Configuration
(All Pins Top View)
QSOP
I0A
I1A
I0B
I1B
I0C
I1C
I0D
I1D
S
I0A
I1A
YA
I0B
I1B
YB
GND
1
2
3
4
5
6
7
8
16 VCC
15 /E
14 I0D
13 I1D
12 YD
11 I0C
10 I1C
9 YC
2001-04-12
Page 1
MDSS-0009-01
www.vaishali.com
Vaishali Semiconductor 747 Camden Avenue, Suite C Campbell CA 95008 Ph. 408.377.6060 Fax 408.377.6063

1 Page





VS32257Q pdf, ピン配列
VS3257/VS32257
Table 5. Recommended Operating Conditions
Symbol
Parameter
Conditions Min Typ Max Units
VCC Power supply voltage
4.5 5.5 V
VIL Low level input voltage
-0.5 0.8 V
VIH High level input voltage
TA Operating free-air temperature
2.0 5.5 V
-40 85 oC
Note:
1. All unused control inputs of the device must be held at Vcc or GND, to ensure proper device operation
Table 6. Electrical Characteristics Over Recommended Operating Free-air Temperature Range
Symbol
Parameter
Test Conditions
Min Typ(1) Max Units
VIK Clamp Voltage
Control Inputs VCC = Min, IIK = -18 mA
-1.5 V
Switch I/O
-1.5
VOH Logic High Voltage Switch I/O
VIN = VCC = 5V, IOUT = -5µA 3.7 3.9 4.1
V
VCC = 4.3V, VN = 5V,
3.0 3.3 3.6
IOUT = -5µA
II Input Leakage Control Inputs VCC = Max, VI = VCC or GND
Current
1 µA
|OFF| Power OFF Leakage Control Inputs VCC = 0,
Current
Switch I/O
VI or VO = VCC or GND
1 µA
|IOZ| OFF State Leakage Switch I/O
Current
VCC = Max, VI/O = VCC,
/E = VCC
1 µA
IODL Switch I/O Drive
VCC = Min, VIN = 0,
Current (Logic LOW)
VOUT = 0.4V
VS3257
VS32257
50
mA
mA
IODH Switch I/O Drive
VCC = Min, VIN = VCC,
Current (Logic HIGH)
VOUT = 2.4V
VS3257
VS32257
-50
mA
mA
RON Switch ON
Resistance(2)
VCC = Min, VIN = 0,
IOUT = 30mA
VS3257
VS32257
5 7
20 28 40
Notes:
1. Typical values are specified at VCC = 5.0V and TA = 25oC.
2. RON is measured by forcing specified current into the ‘output’ node of the switch with the ‘input’ node of the switch at the the
specified voltage
Table 7. Power Supply Characteristics Over Recommended Operating Free-air Temperature Range
Symbol
Parameter
Test Conditions (1)
Max Units
ICCQ
Quiescent Power Supply Current
VCC = Max, S, /E = VCC or GND, f = 0
1 µA
ICC
QCCD
Power Supply Current per Input High
(Control Inputs) (2)
Dynamic Power Supply Current (3)
VCC = Max, VIN = 3.4V, f = 0
VCC = Max, Switch pins open,
1.5 mA
0.25 mA/MHz
Control Inputs toggling at 50% duty cycle
Notes:
1. For conditions shown as Min or Max, use the appropriate values per Recommended Operating Conditions.
2. Per TTL-driven control input. All other control inputs at GND. Switch I/O pins do not contribute to ICC.
3. This parameter represents the average DC current resulting from the switching of internal nodes of the device at a given
frequency. The switch I/O pins make insignificant contribution to the dynamic power supply current of the device. This parameter
is guaranteed, but not production tested.
2001-04-12
Page 3
MDSS-0009-01
www.vaishali.com
Vaishali Semiconductor 747 Camden Avenue, Suite C Campbell CA 95008 Ph. 408.377.6060 Fax 408.377.6063


3Pages


VS32257Q 電子部品, 半導体
VS3257/VS32257
Switching Waveforms
Input
Switch Output
tPLH
tPHL
3.0 V
1.5 V
0V
VOH
1.5 V
VOL
Propagation Delay
Control Input
tPHZ
Switch Output
(Switch Input = 3.0 V)
Switch Output
(Switch Input = 0 V)
tPLZ
Switch ON
0.3 V
0.3 V
Switch OFF
tPZH
3.0 V
1.5 V
0V
VOH
1.5 V
0V
tPZL
3.5 V
1.5 V
VOL
Switch ON
Enable and Disable Times
Ordering Information
Part Number
VS3257Q
VS32257Q
No. of Pins
16
16
Package
QSOP
QSOP
Temperature
-40°C to +85°C
-40°C to +85°C
2001-04-12
Page 6
MDSS-0009-01
www.vaishali.com
Vaishali Semiconductor 747 Camden Avenue, Suite C Campbell CA 95008 Ph. 408.377.6060 Fax 408.377.6063

6 Page



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部品番号部品説明メーカ
VS32257Q

Quad 2:1 Mux/Demux VSwitch

Vaishali Semiconductor
Vaishali Semiconductor


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