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參數(shù)資料
| 型號(hào)： | FST3244WMX |
| 廠商： | Fairchild Semiconductor |
| 文件頁(yè)數(shù)： | 4/7頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC SWITCH BUS 8BIT TTL 20SOIC |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 類(lèi)型： | 總線開(kāi)關(guān) |
| 電路： | 8 x 1:1 |
| 獨(dú)立電路： | 2 |
| 電壓電源： | 單電源 |
| 電源電壓： | 4 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 20-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 20-SOIC |
| 包裝： | 帶卷 (TR) |
1997 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FST3244 Rev. 1.0.4
4
FST3244
—
8-Bit
Bus
Switch
DC Electrical Characteristics
Typical values are at VCC = 5.0 V and TA = 25°C.
Symbol
Parameter
Conditions
VCC (V)
TA=-40 to +85°C
Units
Min.
Typ.
Max.
VIK
Clamp Diode Voltage
IIN = -18 mA
4.5
-1.2
V
VIH
High-Level Input Voltage
4.0 to 5.5
2.0
V
VIL
Low-Level Input Voltage
4.0 to 5.5
0.8
V
IIN
Input Leakage Current
0
≤ VIN ≤ 5.5 V
5.5
±1.0
A
IOZ
Off-state Leakage Current
0
≤ A, B ≤ VCC
5.5
±1.0
A
RON
Switch On Resistance
(3)
VIN = 0 V, IIN = 64 mA
4.5
4
7
Ω
VIN = 0 V, IIN = 30 mA
4.5
4
7
VIN = 2.4 V, IIN = 15 mA
4.5
8
15
VIN = 2.4 V, IIN = 15 mA
4.0
11
20
ICC
Quiescent Supply Current
VIN = VCC or GND,
IOUT = 0
5.5
3
A
ΔICC
Increase in ICC per Input
One Input at 3.4 V, Other
Inputs at VCC or GND
5.5
2.5
mA
Note:
3.
Measured by the voltage drop between the A and B pins at the indicated current through the switch. On
resistance is determined by the lower of the voltages on the A or B pins.
AC Electrical Characteristics
TA = -40 to +85°C, CL = 50 pF, and RU = RD = 500
Ω.
Symbol
Parameter
Conditions
VCC = 4.5 – 5.5 V
VCC = 4.0 V
Units
Figure
Min.
Max.
Min.
Max.
tPHL, tPLH
Propagation Delay
Bus-to Bus
(4)
VIN = Open
0.25
ns
Figure 3
Figure 4
tPZH ,tPZL
Output Enable Time
VIN = 7 V for tPZL
VIN = Open for
tPZH
1.0
5.6
6.1
ns
Figure 3
Figure 4
tPHZ, tPLZ
Output Disable Time
VIN = 7 V for tPLZ
VIN = Open for
tPHZ
1.0
6.2
5.6
ns
Figure 3
Figure 4
Note:
4.
This parameter is guaranteed by design, but is not tested. The bus switch contributes no propagation delay other
than the RC delay of the typical on resistance of the switch and the 50 pF load capacitance when driven by an
ideal voltage source (zero output impedance).
Capacitance
TA = +25°C, f = 1MHz. Capacitance is characterized, but not tested.
Symbol
Parameter
Conditions
Typ.
Units
CIN
Control Pin Input Capacitance
VCC = 5.0 V
3
pF
CI/O
Input/Output Capacitance
VCC, /OE = 5.0 V
5
pF
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