FSTD3306_06 Datasheet, PDF (1/11 Pages) Fairchild Semiconductor – 2-Bit Low-Power Bus Switch with Level Shifting

August 2006
FSTD3306
2-Bit Low-Power Bus Switch with Level Shifting
Features
ƒ Typical 3Ω switch resistance at 5.0V V_CC, V_IN = 0V
ƒ Level shift facilitates 5V to 3.3V interfacing
ƒ Minimal propagation delay through the switch
ƒ Power down high impedance input/output
ƒ Zero bounce in flow-through mode
ƒ TTL compatible active LOW control inputs
ƒ Control inputs are over-voltage tolerant
Description
The FSTD3306 is a 2-bit ultra high-speed CMOS FET
bus switch with enhanced level-shifting circuitry and
TTL-compatible active LOW control inputs. The low on
resistance of the switch allows inputs to be connected to
outputs with minimal propagation delay and without
generating additional ground bounce noise. The device
is organized as a 2-bit switch with independent bus-
enable ( BE ) controls. When BE is LOW, the switch is
ON and Port A is connected to Port B. When BE is
HIGH, the switch is OPEN and a high-impedance state
exists between the two ports. Reduced voltage drive to
the gate of the FET switch permits nominal level shifting
of 5V to 3V through the switch. Control inputs tolerate
voltages up to 5.5V independent of V_CC.
Ordering Information
Part Number
Top
Mark
Package
Pb-
Free
Operating
Temperature Packing Method
Range
FSTD3306MTCX FD3306 8-Lead Thin Shrink Small Outline Package Yes -40 to +85°C
(TSSOP), JEDEC MO-153, 4.4mm Wide
Tape & Reel
FSTD3306MTC FD3306 8-Lead Thin Shrink Small Outline Package Yes -40 to +85°C
(TSSOP), JEDEC MO-153, 4.4mm Wide
Tube
FSTD3306L8X
TD 8-Lead MicroPak™
Yes -40 to +85°C 5000 units on Reel
Logic Diagram
Figure 1.
© 2001 Fairchild Semiconductor Corporation
FSTD3306 Rev. 1.2.2 • 8/9/06
Logical Connections for the FSTD3306
www.fairchildsemi.com