参数资料
型号: IDT74FST3125PG8
厂商: INTEGRATED DEVICE TECHNOLOGY INC
元件分类: 总线收发器
英文描述: CBT/FST/QS/5C/B SERIES, 4-BIT DRIVER, TRUE OUTPUT, PDSO14
封装: TSSOP-14
文件页数: 1/5页
文件大小: 91K
代理商: IDT74FST3125PG8
1
IDT74FST3125
4-BIT BUS SWITCH
COMMERCIALTEMPERATURERANGE
AUGUST 1999
1999
Integrated Device Technology, Inc.
DSC-3471/4
c
IDT74FST3125
COMMERCIAL TEMPERATURE RANGE
4-BIT BUS SWITCH
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 resistance 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 x
OE pins
provide individual enable control for each of the four bits.
FUNCTIONAL BLOCK DIAGRAM
1A
1O E
1Y
2A
2O E
2Y
3A
3O E
3Y
4A
4O E
4Y
PIN CONFIGURATION
5
6
7
8
1
2
3
4
14
13
12
11
10
9
1A
1Y
NC
2A
2Y
GND
4A
4Y
3A
3Y
NC
Vcc
1O E
SO 16-1
SO 16-7
15
16
2O E
3O E
4O E
5
6
7
8
1
2
3
4
14
13
12
11
10
9
1A
1Y
2A
2Y
1O E
2O E
4A
4Y
3A
3Y
Vcc
SO 14-3
3O E
4O E
GND
SOIC/ QSOP
TOP VIEW
TSSOP
TOP VIEW
FEATURES:
Bus switches provide zero delay paths
Extended commercial range of –40°C to +85°C
Low switch on-resistance: FST3xxx – 5
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, SOIC, and TSSOP Packages
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