74FST3861
10-Bit Bus Switch
The ON Semiconductor 74FST3861 is a 10–bit, high performance
bus switch. The device is CMOS TTL compatible when operating
between 4 and 5.5 Volts. The device exhibits extremely low R and
ON
adds nearly zero propagation delay. The device adds no noise or
ground bounce to the system.
http://onsemi.com
• R t 4 W Typical
ON
• Less Than 0.25 ns–Max Delay Through Switch
• Nearly Zero Standby Current
• No Circuit Bounce
MARKING
DIAGRAMS
• Control Inputs are TTL/CMOS Compatible
• Pin–For–Pin Compatible With QS3861, FST3861, CBT3861
• All Popular Packages: SOIC–24, TSSOP–24, QSOP–24
24
1
24
FST3861
AWLYWW
1
SO–24
DW SUFFIX
CASE 751E
NC
V
OE
1
2
3
4
5
6
7
8
9
24
23
CC
TRUTH TABLE
Input
A
1
A
2
22
21
20
19
18
17
16
15
14
13
B
1
24
A
3
24
B
2
FST
3861
ALYW
Operation
OE
A
4
B
3
A Port = B Port
Disconnect
L
A
5
B
4
1
A
6
B
5
H
TSSOP–24
DT SUFFIX
CASE 948H
1
A
7
B
6
NOTE:
H = HIGH Voltage Level
L = LOW Voltage Level
A
8
B
7
A
9
10
11
12
B
8
A
10
B
9
GND
B
10
24
1
24
SO24–7/SO24–8/SO24–9
FST3861
AWLYYWW
1
Figure 1. 24–Lead
Pinout
QSOP–24
QS SUFFIX
CASE 492B
A
= Assembly Location
PIN NAMES
L, WL = Wafer Lot
Y, YY = Year
Pin
Description
W, WW = Work Week
OE
Bus Switch Enables
NC
No Connect
Bus A
A to A
1
ORDERING INFORMATION
10
B to B
Bus B
Device
Package
Shipping
1
10
74FST3861DW
SO–24
SO–24
48 Units/Rail
2500 Units/Reel
96 Units/Rail
74FST3861DWR2
74FST3861DT
74FST3861DTR2
74FST3861QS
74FST3861QSR
TSSOP–24
TSSOP–24 2500 Units/Reel
QSOP–24 96 Units/Rail
QSOP–24 2500 Units/Reel
Semiconductor Components Industries, LLC, 2002
1
Publication Order Number:
May, 2002 – Rev. 4
74FST3861/D