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74FST3125/D Datasheet

  • 74FST3125/D

  • 4-Bit Bus Switch

  • 85.97KB

  • 8頁

  • ETC

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74FST3125
Product Preview
4-Bit Bus Switch
The ON Semiconductor 74FST3125 is a quad, high performance
switch. The device is CMOS TTL compatible when operating between
4 and 5.5 Volts. The device exhibits extremely low R
ON
and adds
nearly zero propagation delay. The device adds no noise or ground
bounce to the system.
The device consists of four independent 1鈥揵it switches with
separate Output/Enable (OE) pins. Port A is connected to Port B when
OE is low. If OE is high, the switch is high Z.
鈥?/div>
R
ON
t
4
W
Typical
鈥?/div>
Less Than 0.25 ns鈥揗ax Delay Through Switch
鈥?/div>
Nearly Zero Standby Current
鈥?/div>
No Circuit Bounce
鈥?/div>
Control Inputs are TTL/CMOS Compatible
鈥?/div>
Pin鈥揊or鈥揚(yáng)in Compatible With QS3125, 74FST3125, CBT3125
鈥?/div>
All Popular Packages: QSOP鈥?6, TSSOP鈥?4, SOIC鈥?4
OE
1
1A
1B
OE
2
2A
2B
GND
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V
CC
OE
4
4A
4B
OE
3
3A
3B
NC
OE
1
1A
1B
OE
2
2A
2B
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
CC
OE
4
4A
4B
OE
3
3A
3B
NC
http://onsemi.com
MARKING
DIAGRAMS
14
1
SO鈥?4
D SUFFIX
CASE 751A
14
FST3125
AWLYWW
1
14
14
1
TSSOP鈥?4
DT SUFFIX
CASE 948G
1
16
1
QSOP鈥?6
QS SUFFIX
CASE 492
A
L, WL
Y
W, WW
=
=
=
=
14
FST
3125
AWLYWW
1
Assembly Location
Wafer Lot
Year
Work Week
FST3125
ALYW
Figure 1. Pin Assignment
for SOIC and TSSOP
OE
1
1
Figure 2. Pin Assignment
for QSOP
1A
OE
2
2
4
3
1B
PIN NAMES
Pin
OE
1
, OE
2
, OE
3
, OE
4
Description
Bus Switch Enables
Bus A
Bus B
Not Connected
2A
OE
3
5
10
6
2B
1A, 2A, 3A, 4A
1B, 2B, 3B, 4B
NC
3A
OE
4
9
13
8
3B
ORDERING INFORMATION
Device
74FST3125D
74FST3125DR2
Package
SO鈥?4
SO鈥?4
TSSOP鈥?4
TSSOP鈥?4
QSOP鈥?6
QSOP鈥?6
Shipping
55 Units/Rail
2500 Units/Reel
96 Units/Rail
2500 Units/Reel
50 Units/Rail
2000 Units/Reel
4A
12
11
4B
74FST3125DT
74FST3125DTR2
74FST3125M
74FST3125MEL
Figure 3. Logic Diagram
This document contains information on a product under development. ON Semiconductor
reserves the right to change or discontinue this product without notice.
漏
Semiconductor Components Industries, LLC, 2001
1
June, 2001 鈥?Rev. 0
Publication Order Number:
74FST3125/D

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