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What is 74FST3126D?

This electronic component, produced by the manufacturer "ON", performs the same function as "4-Bit Bus Switch".


74FST3126D Datasheet PDF - ON

Part Number 74FST3126D
Description 4-Bit Bus Switch
Manufacturers ON 
Logo ON Logo 


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74FST3126
4-Bit Bus Switch
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 RON and adds
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. Port A is connected to Port B when
OE is high. If OE is low, the switch is high Z.
RON t 4 W Typical
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
OE1
1A
1B
OE2
2A
2B
GND
1
2
3
4
5
6
7
14 VCC
13 OE4
12 4A
11 4B
10 OE3
9 3A
8 3B
Figure 1. Pin Assignment for
SOIC and TSSOP
NC
OE1
1A
1B
OE2
2A
2B
GND
1
2
3
4
5
6
7
8
16 VCC
15 OE4
14 4A
13 4B
12 OE3
11 3A
10 3B
9 NC
Figure 2. Pin Assignment
for QSOP
© Semiconductor Components Industries, LLC, 2001
August, 2001 – Rev. 0
1
http://onsemi.com
14
1
SO–14
D SUFFIX
CASE 751A
MARKING
DIAGRAMS
14
FST3126
AWLYWW
1
14
14
1
TSSOP–14
DT SUFFIX
CASE 948G
FST
3126
ALYW
1
16
16
1
QSOP–16
QS SUFFIX
CASE 492
S3126
ALYW
1
A = Assembly Location
L, WL = Wafer Lot
Y = Year
W, WW = Work Week
PIN NAMES
Pin
OE1, OE2, OE3, OE4
1A, 2A, 3A, 4A
1B, 2B, 3B, 4B
NC
Description
Bus Switch Enables
Bus A
Bus B
Not Connected
ORDERING INFORMATION
Device
Package
74FST3126D
SO–14
74FST3126DR2
SO–14
74FST3126DT TSSOP–14
74FST3126DTR2 TSSOP–14
74FST3126QS
QSOP–16
74FST3126QSR QSOP–16
Shipping
55 Units/Rail
2500 Units/Reel
96 Units/Rail
2500 Units/Reel
98 Units/Rail
2500 Units/Reel
Publication Order Number:
74FST3126/D

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74FST3126D equivalent
74FST3126
AC Loading and Waveforms
FROM
OUTPUT
UNDER
TEST
VI
500 W
500 W
CL*
NOTES:
1. Input driven by 50 W source terminated in 50 W.
2. CL includes load and stray capacitance.
*CL = 50 pF
Figure 4. AC Test Circuit
SWITCH
INPUT
10 %
tPLH
tf = 2.5 nS
90 %
1.5 V
90 %
1.5 V
OUTPUT
1.5 V
tf = 2.5 nS
3.0 V
10 %
GND
tPLH
VOH
1.5 V
VOL
Figure 5. Propagation Delays
ENABLE
INPUT
tf = 2.5 nS
90 %
1.5 V
tPZL
OUTPUT
tPZH
OUTPUT
10 % 10 %
1.5 V
1.5 V
tf = 2.5 nS
90 % 3.0 V
1.5 V
GND
tPZL
VOL + 0.3 V
VOL
tPHZL
VOH
VOH – 0.3 V
Figure 6. Enable/Disable Delays
http://onsemi.com
5


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Part Details

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