74FST3125_13 Datasheet, PDF (1/7 Pages) ON Semiconductor – 4-Bit Bus Switch

FST3125
4-Bit Bus Switch
The ON Semiconductor FST3125 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−bit 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.
Features
• R_ON 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 QS3125, FST3125, CBT3125
• All Popular Packages: TSSOP−14, SOIC−14
• These are Pb−Free Devices
OE₁ 1
1A 2
1B 3
OE₂ 4
2A 5
2B 6
GND 7
14 V_CC
13 OE₄
12 4A
11 4B
10 OE₃
9 3A
8 3B
Figure 1. Pin Assignment for
SOIC and TSSOP
http://onsemi.com
MARKING
DIAGRAMS
14
1
SOIC−14
D SUFFIX
CASE 751A
14
FST3125G
AWLYWW
1
14
1
TSSOP−14
DT SUFFIX
CASE 948G
14
FST
3125
ALYWG
G
1
A
= Assembly Location
WL, L = Wafer Lot
Y
= Year
WW, W = Work Week
G or G = Pb−Free Package
(Note: Microdot may be in either location)
PIN NAMES
Pin
OE₁, OE₂, OE₃, OE₄
1A, 2A, 3A, 4A
Description
Bus Switch Enables
Bus A
1B, 2B, 3B, 4B
Bus B
NC
Not Connected
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2013
1
June, 2013 − Rev. 0
Publication Order Number:
FST3125/D