74FST3400 Datasheet, PDF (1/8 Pages) ON Semiconductor – 4-Bit, 4-Port Bus Exchange Switch

74FST3400
4−Bit, 4−Port Bus Exchange
Switch
The ON Semiconductor 74FST3400 is a 4−bit, 4−port bus exchange
switch. The device is CMOS TTL compatible when operating between
4.0 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 QS3400, FST3400, CBT3400
• All Popular Packages: SOIC−24, TSSOP−24, QSOP−24
• All Devices in Package TSSOP are Inherently Pb−Free*
BE
C₀
A₀
B₀
D₀
C₁
A₁
B₁
D₁
BX₀
BX₁
GND
1
24
V_CC
2
23
D₃
3
22
B₃
4
21
A₃
5
20
C₃
6
19
D₂
7
18
B₂
8
17
A₂
9
16
C₂
10 15
NC
11 14
BX₃
12 13
BX₂
Figure 1. 24−Lead Pinout
TRUTH TABLE
BE BX₀ BX₁ BX₂ BX₃ A0−3 B0−3
Function
H
X
X
X
X Hi−Z Hi−Z Disconnect
L
BXi = L
C0−3 D0−3
Connect
L
BXi = H
D0−3 C0−3 Exchange
NOTE: H = HIGH Voltage Level, L = LOW Voltage Level, X = Don’t Care,
NOTE: Hi−Z = High Impedance, i = 0, 1, 2 or 3
*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. 5
http://onsemi.com
MARKING
DIAGRAMS
24
1
SOIC−24
DW SUFFIX
CASE 751E
24
FST3400
AWLYWW
1
24
1
TSSOP−24
DT SUFFIX
CASE 948H
24
FST
3400
ALYW
1
24
1
QSOP−24
QS SUFFIX
CASE 492B
24
FST3400
AWLYYWW
1
A
= Assembly Location
L, WL = Wafer Lot
Y, YY = Year
W, WW = Work Week
PIN NAMES
Pin
BE
Ax, Bx, Cx, Dx
OE₁, OE₂
OE₁, OE₂
OE₁, OE₂
OE₁, OE₂
OE₁, OE₂
OE₁, OE₂
OE₁, OE₂
Description
Bus Enable Input (Active LOW)
Bus A, Bus B, Bus C, Bus D
Bus Exchange (Bit 0)
Bus Exchange (Bit 1)
Bus Exchange (Bit 2)
Bus Exchange (Bit 3)
No Connect
Ground
Power
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
Publication Order Number:
74FST3400/D