74FST3400
器件描述：4-Bit, 4-Port Bus Exchange Switch
器件厂商：ONSEMI [ON Semiconductor]
文件大小：96.09KB，共8页
Sponsor by e络盟器件资料摘要：
Semiconductor Components Industries, LLC, 2005
January, 2005 − Rev. 5
1 Publication Order Number:
74FST3400/D
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
4 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*
Figure 1. 24−Lead Pinout
TRUTH TABLE
1
2
3
4
5
6
7
8
9
10
11
12
V
CC
D
3
B
3
A
3
C
3
D
2
B
2
A
2
C
2
NC
BX
3
BX
2
24
23
22
21
20
19
18
17
16
15
14
13
BE
C
0
A
0
B
0
D
0
C
1
A
1
B
1
D
1
BX
0
BX
1
GND
NOTE: H = HIGH Voltage Level, L = LOW Voltage Level, X = Don’t Care,
NOTE: Hi−Z = High Impedance, i = 0, 1, 2 or 3
BE Function
H Disconnect
L Connect
L Exchange
BX
0
X
BX
1
X
BXi = L
BXi = H
BX
2
X
BX
3
X
A0−3
Hi−Z
C0−3
D0−3
B0−3
Hi−Z
D0−3
C0−3
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
A = Assembly Location
L, WL = Wafer Lot
Y, YY = Year
W, WW = Work Week
TSSOP−24
DT SUFFIX
CASE 948H
24
1
QSOP−24
QS SUFFIX
CASE 492B
SOIC−24
DW SUFFIX
CASE 751E
24
1
1
24
FST3400
AWLYWW
MARKING
DIAGRAMS
24
1
24
1
1
24
FST
3400
ALYW
FST3400
AWLYYWW
Description
PIN NAMES
BE
Pin
Bus Enable Input (Active LOW)
Ax, Bx, Cx, Dx Bus A, Bus B, Bus C, Bus D
OE
1
, OE
2
Bus Exchange (Bit 0)
OE
1
, OE
2
Bus Exchange (Bit 1)
OE
1
, OE
2
Bus Exchange (Bit 2)
OE
1
, OE
2
Bus Exchange (Bit 3)
OE
1
, OE
2
No Connect
OE
1
, OE
2
Ground
OE
1
, OE
2
Power
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
ORDERING INFORMATION
http://onsemi.com
January, 2005 − Rev. 5
1 Publication Order Number:
74FST3400/D
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
4 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*
Figure 1. 24−Lead Pinout
TRUTH TABLE
1
2
3
4
5
6
7
8
9
10
11
12
V
CC
D
3
B
3
A
3
C
3
D
2
B
2
A
2
C
2
NC
BX
3
BX
2
24
23
22
21
20
19
18
17
16
15
14
13
BE
C
0
A
0
B
0
D
0
C
1
A
1
B
1
D
1
BX
0
BX
1
GND
NOTE: H = HIGH Voltage Level, L = LOW Voltage Level, X = Don’t Care,
NOTE: Hi−Z = High Impedance, i = 0, 1, 2 or 3
BE Function
H Disconnect
L Connect
L Exchange
BX
0
X
BX
1
X
BXi = L
BXi = H
BX
2
X
BX
3
X
A0−3
Hi−Z
C0−3
D0−3
B0−3
Hi−Z
D0−3
C0−3
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
A = Assembly Location
L, WL = Wafer Lot
Y, YY = Year
W, WW = Work Week
TSSOP−24
DT SUFFIX
CASE 948H
24
1
QSOP−24
QS SUFFIX
CASE 492B
SOIC−24
DW SUFFIX
CASE 751E
24
1
1
24
FST3400
AWLYWW
MARKING
DIAGRAMS
24
1
24
1
1
24
FST
3400
ALYW
FST3400
AWLYYWW
Description
PIN NAMES
BE
Pin
Bus Enable Input (Active LOW)
Ax, Bx, Cx, Dx Bus A, Bus B, Bus C, Bus D
OE
1
, OE
2
Bus Exchange (Bit 0)
OE
1
, OE
2
Bus Exchange (Bit 1)
OE
1
, OE
2
Bus Exchange (Bit 2)
OE
1
, OE
2
Bus Exchange (Bit 3)
OE
1
, OE
2
No Connect
OE
1
, OE
2
Ground
OE
1
, OE
2
Power
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
ORDERING INFORMATION
http://onsemi.com