74FST3253 Datasheet, PDF (1/8 Pages) ON Semiconductor – Dual 4:1 Multiplexer/ Demultiplexer Bus Switch

74FST3253
Dual 4:1 Multiplexer/
Demultiplexer Bus Switch
The ON Semiconductor 74FST3253 is a dual 4:1, high performance
multiplexer/demultiplexer bus 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.
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 QS3253, FST3253, CBT3253
• All Popular Packages: QSOP−16, TSSOP−16, SOIC−16
• All Devices in Package TSSOP are Inherently Pb−Free*
OE₁ 1
S1 2
1B₄ 3
1B₃ 4
1B₂ 5
1B₁ ⁶
1A 7
GND ⁸
16 V_CC
15 OE₂
14 S₀
13 2B₄
12 2B₃
11 _2B2
10 _2B1
9 _2A
Figure 1. 16−Lead
Pinout
S₁ S₀ OE₁ OE₂
XX H X
XX X H
LL L L
LH L L
HL L L
HH L L
Function
Disconnect 1A
Disconnect 2A
A = B₁
A = B₂
A = B₃
A = B₄
Figure 2. Truth Table
http://onsemi.com
MARKING
DIAGRAMS
16
1
SOIC−16
D SUFFIX
CASE 751B
16
1
TSSOP−16
DT SUFFIX
CASE 948F
16
FST3253
AWLYWW
1
16
FST
3253
ALYW
1
16
1
QSOP−16
QS SUFFIX
CASE 492
16
S3253
ALYW
1
A
= Assembly Location
L, WL = Wafer Lot
Y
= Year
W, WW = Work Week
PIN NAMES
Pin
OE₁, OE₂
S₀, S₁
A
B₁, B₂, B₃, B₄
Description
Bus Switch Enables
Select Inputs
Bus A
Bus B
*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, 2005
1
January, 2005 − Rev. 2
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
Publication Order Number:
74FST3253/D