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PDF IDT74FST3125Q Data sheet ( Hoja de datos )
| Número de pieza | IDT74FST3125Q | |
| Descripción | 4-BIT BUS SWITCH | |
| Fabricantes | Integrated Device | |
| Logotipo |  |
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4-BIT BUS SWITCH
IDT74FST3125
Integrated Device Technology, Inc.
FEATURES:
• Bus switches provide zero delay paths
• Extended commercial range of –40°C to +85°C
• Low switch on-resistance:
FST3xxx – 5Ω
• TTL-compatible input and output levels
• ESD > 2000V per MIL-STD-883, Method 3015;
> 200V using machine model (C = 200pF, R = 0)
• Available in QSOP and SOIC
DESCRIPTION:
The FST3125 belong to IDT's family of Bus switches. Bus
switch devices perform the function of connecting or isolating
two ports without providing any inherent current sink or source
capability. Thus they generate little or no noise of their own
while providing a low resistance path for an external driver.
These devices connect input and output ports through an n-
channel FET. When the gate-to-source junction of this FET is
adequately forward-biased the device conducts and the resis-
tance between input and output ports is small. Without
adequate bias on the gate-to-source junction of the FET, the
FET is turned off, therefore with no VCC applied, the device
has hot insertion capability.
The low on-resistance and simplicity of the connection
between input and output ports reduces the delay in this path
to close to zero.
The FST3125 is a 4-bit TTL-compatible bus switch. The
xOE pins provide individual enable control for each of the four
bits.
FUNCTIONAL BLOCK DIAGRAM
PIN CONFIGURATION
1A
1OE
2A
2OE
3A
3OE
4A
4OE
1Y
2Y
3Y
4Y
3471 drw 01
NC
1OE
1A
1Y
2OE
2A
2Y
GND
1
2
3
4
5
6
7
8
SO16-1
SO16-7
16 Vcc
15 4OE
14 4A
13 4Y
12 3OE
11 3A
10 3Y
9 NC
SOIC/QSOP
TOP VIEW
3471 drw 02
PIN DESCRIPTION
Pin Names
1A-4A
1Y-4Y
NC
1OE, 4OE
I/O
I/O
I/O
—
I
Description
Bus A
Bus B
No Connect
Bus Switch Enable (Active LOW)
3471 tbl 01
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
COMMERCIAL TEMPERATURE RANGE
©1996 Integrated Device Technology, Inc.
1
AUGUST 1996
DSC-4668/-
1 page  
IDT74FST3125
4-BIT BUS SWITCH
ORDERING INFORMATION
IDT XX
FST XX
Temp. Range Device Type
X
Package
COMMERCIAL TEMPERATURE RANGE
SO Small Outline IC (SO16-1)
Q Quarter-size Small Outline Package (SO16-7)
3125
4-Bit Bus Switch
74 –40°C to +85°C
3471 drw 08
5
5 Page | ||
| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet IDT74FST3125Q.PDF ] | |
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