74FST3126 ON, 74FST3126 Datasheet

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74FST3126

Manufacturer Part Number
74FST3126
Description
4-Bit Bus Switch
Manufacturer
ON
Datasheet

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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 high. If OE is low, the switch is high Z.
August, 2001 – Rev. 0
The ON Semiconductor 74FST3126 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 QS3126, FST3126, CBT3126
All Popular Packages: QSOP–16, TSSOP–14, SOIC–14
Semiconductor Components Industries, LLC, 2001
ON
t 4 W Typical
Figure 1. Pin Assignment for
GND
Figure 2. Pin Assignment
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
16
15
14
13
12
10
9
8
11
9
V
OE
4A
4B
OE
3A
3B
V
OE
4A
4B
OE
3A
3B
NC
CC
CC
4
3
4
3
ON
and adds
1
PIN NAMES
ORDERING INFORMATION
74FST3126D
74FST3126DR2
74FST3126DT
74FST3126DTR2
74FST3126QS
74FST3126QSR
OE
1A, 2A, 3A, 4A
1B, 2B, 3B, 4B
NC
Device
16
1
14
CASE 751A
, OE
CASE 948G
D SUFFIX
14
TSSOP–14
DT SUFFIX
QS SUFFIX
CASE 492
QSOP–16
SO–14
2
A
L, WL
Y
W, WW = Work Week
1
, OE
Pin
1
1
http://onsemi.com
3
, OE
= Assembly Location
= Wafer Lot
= Year
TSSOP–14
TSSOP–14
4
QSOP–16
QSOP–16
Package
SO–14
SO–14
Publication Order Number:
14
1
14
16
1
1
Bus Switch Enables
Not Connected
DIAGRAMS
2500 Units/Reel
2500 Units/Reel
2500 Units/Reel
MARKING
Description
AWLYWW
55 Units/Rail
96 Units/Rail
98 Units/Rail
FST3126
74FST3126/D
S3126
Shipping
ALYW
Bus B
ALYW
Bus A
3126
FST

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74FST3126 Summary of contents

Page 1

... The ON Semiconductor 74FST3126 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

... Figure 3. Logic Diagram TRUTH TABLE Inputs http://onsemi.com Outputs ...

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. 74FST3126 Parameter t GND GND V O SOIC TSSOP QSOP ...

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 74FST3126 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

... G –T– 14X REF L PIN 1 IDENT. A –V– C –T– 74FST3126 PACKAGE DIMENSIONS SO–14 D SUFFIX CASE 751A–03 ISSUE TSSOP–14 DT SUFFIX CASE 948G–01 ISSUE – ...

Page 7

... R –B– 74FST3126 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 DETAIL E http://onsemi.com 7 MOLD PIN ...

Page 8

... N. American Technical Support: 800–282–9855 Toll Free USA/Canada 74FST3126 JAPAN: ON Semiconductor, Japan Customer Focus Center 4–32–1 Nishi–Gotanda, Shinagawa–ku, Tokyo, Japan 141–0031 Phone: 81–3–5740–2700 Email: r14525@onsemi.com ON Semiconductor Website: http://onsemi.com For additional information, please contact your local Sales Representative. http://onsemi.com 8 74FST3126/D ...

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