74FST3125 ON Semiconductor, 74FST3125 Datasheet

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74FST3125

Manufacturer Part Number
74FST3125
Description
4-Bit Bus Switch
Manufacturer
ON Semiconductor
Datasheet

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74FST3125
4−Bit Bus Switch
switch. The device is CMOS TTL compatible when operating between
4 and 5.5 Volts. The device exhibits extremely low R
nearly zero propagation delay. The device adds no noise or ground
bounce to the system.
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.
Features
*For additional information on our Pb−Free strategy and soldering details, please
January, 2005 − Rev. 2
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
The ON Semiconductor 74FST3125 is a quad, high performance
The device consists of four independent 1−bit switches with
R
Less Than 0.25 ns−Max Delay Through Switch
Nearly Zero Standby Current
No Circuit Bounce
Control Inputs are TTL/CMOS Compatible
Pin−For−Pin Compatible With QS3125, FST3125, CBT3125
All Popular Packages: QSOP−16, TSSOP−14, SOIC−14
All Devices in Package TSSOP are Inherently Pb−Free*
Semiconductor Components Industries, LLC, 2005
ON
t 4 W Typical
Figure 1. Pin Assignment for
Figure 2. Pin Assignment
GND
GND
OE
OE
OE
OE
NC
1A
1B
2A
2B
1A
1B
2A
2B
1
2
1
2
SOIC and TSSOP
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
for QSOP
14
13
12
10
11
9
8
16
15
14
13
12
10
11
9
V
OE
4A
4B
OE
3A
3B
CC
V
OE
4A
4B
OE
3A
3B
NC
CC
4
3
4
3
ON
and adds
1
PIN NAMES
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
OE
1A, 2A, 3A, 4A
1B, 2B, 3B, 4B
NC
16
1
14
CASE 751A
, OE
CASE 948G
D SUFFIX
14
TSSOP−14
DT SUFFIX
QS SUFFIX
SOIC−14
CASE 492
QSOP−16
2
ORDERING INFORMATION
A
L, WL
Y
W, WW = Work Week
1
, OE
Pin
1
1
http://onsemi.com
3
, OE
= Assembly Location
= Wafer Lot
= Year
4
Publication Order Number:
14
14
1
16
1
1
Bus Switch Enables
Not Connected
DIAGRAMS
MARKING
Description
AWLYWW
FST3125
74FST3125/D
S3125
ALYW
Bus B
ALYW
Bus A
3125
FST

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74FST3125 Summary of contents

Page 1

... 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 nearly zero propagation delay. The device adds no noise or ground bounce to the system. The device consists of four independent 1−bit switches with separate Output/Enable (OE) pins ...

Page 2

... ORDERING INFORMATION Device Order N mber Device Order Number 74FST3125D 74FST3125DR2 74FST3125DT 74FST3125DTR2 74FST3125QS 74FST3125QSR †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. *This package is inherently Pb−Free. 74FST3125 ...

Page 3

... I V Output Voltage O T Operating Free−Air Temperature A Dt/DV Input Transition Rise or Fall Rate 5. Unused control inputs may not be left open. All control inputs must be tied to a high− or low−logic input voltage level. 74FST3125 Parameter t GND GND V O SOIC TSSOP ...

Page 4

... On resistance of the switch and the 50 pF load capacitance, when driven by an ideal voltage source (zero output impedance). CAPACITANCE (Note 8) Symbol Parameter C Control Pin Input Capacitance IN C Input/Output Capacitance I/O = )25_C MHz, Capacitance is characterized but not tested 74FST3125 Conditions = *18mA 5 ...

Page 5

... AC Loading and Waveforms FROM OUTPUT UNDER TEST NOTES: 1. Input driven source terminated includes load and stray capacitance Figure 4. AC Test Circuit 1.5 V SWITCH INPUT PLH 1.5 V OUTPUT Figure 5. Propagation Delays ENABLE INPUT 1 ...

Page 6

... L PIN 1 IDENT. 1 0.15 (0.006 −V− C 0.10 (0.004) SEATING −T− PLANE 74FST3125 PACKAGE DIMENSIONS SOIC−14 D SUFFIX CASE 751A−03 ISSUE 0.25 (0.010 TSSOP−14 DT SUFFIX CASE 948G−01 ...

Page 7

... R −B− 0.25 (0.010 0.25 (0.010 74FST3125 PACKAGE DIMENSIONS QSOP−16 QS SUFFIX CASE 492−01 ISSUE 45_ U RAD. 0.013 X 0.005 DP. MAX RAD. 0.005−0.010 TYP P DETAIL −T− SEATING PLANE ...

Page 8

... USA/Canada Japan: ON Semiconductor, Japan Customer Focus Center 2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051 Phone: 81−3−5773−3850 http://onsemi.com 8 ON Semiconductor Website: http://onsemi.com Order Literature: http://www.onsemi.com/litorder For additional information, please contact your local Sales Representative. 74FST3125/D ...

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