74FST3125_06 Datasheet, PDF (1/7 Pages) ON Semiconductor – 4−Bit Bus Switch

74FST3125
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−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: QSOP−16, TSSOP−14, SOIC−14
• All Devices in Package TSSOP are Inherently Pb−Free*
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
NC 1
OE₁ 2
1A 3
1B 4
OE₂ 5
2A 6
2B 7
GND 8
16 V_CC
15 OE₄
14 4A
13 4B
12 OE₃
11 3A
10 3B
9 NC
Figure 2. Pin Assignment
for QSOP
http://onsemi.com
14
1
SOIC−14
D SUFFIX
CASE 751A
MARKING
DIAGRAMS
14
FST3125
AWLYWW
1
14
14
1
TSSOP−14
DT SUFFIX
CASE 948G
FST
3125
ALYW
1
16
1
QSOP−16
QS SUFFIX
CASE 492
16
S3125
ALYW
1
A
=
Location
L, WL =
Y
=
W, WW =
PIN NAM^WES^eek
Pin
OE₁, OE₂, OE₃, OE₄
1A, 2A, 3A, 4A
1B, 2B, 3B, 4B
NC
Assembly
Wafer Lot
Year
Work
Description
Bus Switch Enables
Bus A
Bus B
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, 2006
1
June, 2006 − Rev. 3
Publication Order Number:
74FST3125/D