June 1997
Revised May 2003
NC7SZD384
TinyLogic UHS 1-Bit Low Power Bus Switch
with Level Shifting
General Description
Features
The NC7SZD384 provides 1-bit of high-speed CMOS TTL-
compatible bus switch. The low on resistance of the switch
allows inputs to be connected to outputs with minimal prop-
agation delay and without generating additional ground
bounce noise. The device is organized as a 1-bit switch
with a bus enable (OE) signal. 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. Reduced voltage drive to the
gate of the FET switch permits nominal level shifting of 5V
to 3.3V through the switch.
■ Space saving SOT23 or SC70 5-lead package
■ Ultra small MicroPak leadless package
■ 5Ω switch connection between two ports
■ Designed to be used in level-shifting applications
■ Minimal propagation delay through the switch
■ Low ICC
■ Zero bounce in flow-through mode
■ Control inputs compatible with TTL level
Ordering Code:
Order
Package
Number
MA05B
Product Code
Top Mark
8Z4D
Package Description
Supplied As
Number
NC7SZD384M5X
NC7SZD384P5X
NC7SZD384L6X
5-Lead SOT23, JEDEC MO-178, 1.6mm
3k Units on Tape and Reel
MAA05A
MAC06A
Z4D
5-Lead SC70, EIAJ SC-88a, 1.25mm Wide 3k Units on Tape and Reel
6-Lead MicroPak, 1.0mm Wide 5k Units on Tape and Reel
A4
Logic Symbol
Connection Diagrams
Pin Assignments for SC70 and SOT23
Pin Descriptions
Pin Name
Description
(Top View)
OE
A
Bus Switch Enable
Bus A
Pad Assignments for MicroPak
B
Bus B
NC
No Connect
Function Table
OE
BO
Function
L
AO
Connect
H
HIGH-Z State
Disconnect
(Top Thru View)
TinyLogic is a registered trademark of Fairchild Semiconductor Corporation.
MicroPak is a trademark of Fairchild Semiconductor Corporation.
© 2003 Fairchild Semiconductor Corporation
DS500016
www.fairchildsemi.com