FST3245_08 Datasheet, PDF (1/9 Pages) Fairchild Semiconductor – 8-Bit Bus Switch

March 2008
FST3245 — 8-Bit Bus Switch
Features
ƒ 4Ω Switch Connection between Two Ports
ƒ Minimal Propagation Delay through the Switch
ƒ Low ICC
ƒ Zero Bounce in Flow-through Mode
ƒ Control Inputs Compatible with TTL Level
Description
The FST3245 switch provides eight-bits of high-speed
CMOS TTL-compatible bus switching in a standard ’245
pin-out. The low on resistance allows inputs to be
connected to outputs without adding propagation delay
or generating additional ground bounce noise.
The device is organized as an eight-bit switch. When
/OE is LOW, the switch is ON and port A is connected
to port B. When /OE is HIGH, the switch is OPEN and a
high-impedance state exists between the two ports.
Ordering Information
Operating
Part Number Temperature
Range
Package
Packing
Method
FST3245WMX
FST3245QSC
FST3245QSCX
FST3245MTC
FST3245MTCX
-40 to +85°C
-40 to +85°C
-40 to +85°C
-40 to +85°C
-40 to +85°C
20-Lead, Small Outline Integrated Circuit (SOIC), JEDEC
MS-013, 0.300-inch Wide
20-Lead Quarter Size Outline Package (QSOP), JEDEC
MO-137, 0.150-inch Wide
20-Lead Quarter Size Outline Package (QSOP),
JEDEC MO-137, 0.150-inch Wide
20-Lead Thin Shrink Small Outline Package (TSSOP),
JEDEC MO-153, 4.4mm Wide
20-Lead Thin Shrink Small Outline Package (TSSOP),
JEDEC MO-153, 4.4mm Wide
Tape and Reel
Tube
Tape and Reel
Tube
Tape and Reel
All packages are lead free per JEDEC: J-STD-020B standard.
The Fairchild switch family derives from and embodies Fairchild’s proven switch technology used for several years in its
74LVX3L384 (FST3384) bus switch product.
Logic Diagram
A₀ ²
18 B₀
A₇ ⁹
11 _B7
/OE ¹⁹
Figure 1. Logic Diagram
©1997 Fairchild Semiconductor Corporation
FST3245 • Rev. 1.0.2
www.fairchildsemi.com