NC7SZD384P5X - Fairchild Semiconductor

June 1997

Revised December 2005

NC7SZD384 1-Bit Low Power Bus Switch with Level Shifting

NC7SZD384

1-Bit Low Power Bus Switch with Level Shifting

General Description

The NC7SZD384 provides 1-bit of high-speed CMOS TTL-com-

patible bus switch. 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 1-bit switch with a bus enable (OE)

signal. When OE is LOW, the switch is on and Port A is con-

nected 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.

Features

Space saving SOT23 or SC70 5-lead package

Ultra small MicroPak

Pb-Free leadless package

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:

Pb-Free package per JEDEC J-STD-020B.

MicroPak

is a trademark of Fairchild Semiconductor Corporation.

Order Package Product Code Package Description Supplied As

Number Number Top Mark

NC7SZD384M5X MA05B 8Z4D 5-Lead SOT23, JEDEC MO-178, 1.6mm 3k Units on Tape and Reel

NC7SZD384P5X MAA05A Z 4D 5-Lead SC70, EIAJ SC-88a, 1.25mm Wide 3k Units on Tape and Reel

NC7SZD384L6X MAC06A A4 Pb-Free 6-Lead MicroPak, 1.0mm Wide 5k Units on Tape and Reel

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NC7SZD384

Logic Symbol

Pin Descriptions

Function Table

Connection Diagrams

Pin Assignments for SC70 and SOT23

(Top View)

Pad Assignment s for MicroPak

(Top Through View)

Pin Name Description

OE Bus Switch Enable

ABus A

BBus B

NC No Connect

OE BOFunction

OConnect

H HIGH-Z State Disconnect

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NC7SZD384

Absolute Maximum Ratings(Note 1) Recommended Operating

Conditions (Note 3)

Note 1: The “Absolute Maximum Ratings” are those values beyond which the safety

of the device cannot be guaranteed. The device should not be operated at these lim-

its. The parametric values defined in the Electrical Characteristics tables are not

guaranteed at the absolute maximum ratings. The “Recommended Operating Condi-

tions” table will define the conditions for actual device operation.

Note 2: The input and output negative voltage ratings may be exceeded if the input

and output diode current ratings are observed.

Note 3: Unused inputs must be held HIGH or LOW. They may not float.

DC Electrical Characteristics

Note 4: All typical values are at VCC

5.0V, TA

Note 5: Measured by the voltage drop between A and B pins at the indicated current through the switch. On Resistance is determined by the lower of the voltages on the two (A

or B) pins.

Note 6: Per TTL driven input (VIN

3.4V, control input only). A and B pins do not contribute to ICC.

Supply Voltage (VCC)



0.5V to



7.0V

DC Switch V oltage (VS)



0.5V to



7.0V

DC Input Voltage (VIN) (Note 2)



0.5V to



7.0V

DC Input Diode Current (IIK) VIN





50 mA

DC Output (IOUT) Sink Current 128 mA

DC VCC/GND Current (ICC/GND)

100 mA

Storage Temperature Range (TSTG)



C to



150

Junction Temperature under bias (TJ)



150

Junction Lead Temperature (TL)

(Soldering, 10 seconds)



260

Power Dissipation (PD) @



SOT23-5 200 mW

SC70-5 150 mW

Power Supply Operating (VCC) 4.5V to 5.5V

Input Voltage (VIN) 0V to 5.5V

Output Voltage (VOUT) 0V to 5.5V

Input Rise and Fall Time (tr, tf)

Switch Control Input 0 ns/V to 5 ns

Switch I/O 0 ns/V to DC

Operating Temperature (TA)



C to



Thermal Resistance (

JA)

SOT23-5 300

C/Watt

SC70-5 425

C/Watt

Symbol Parameter VCC TA



C to



CUnits Conditions

(V) Min Typ

(Note 4) Max

VIK Maximum Clamp Diode Voltage 4.5



1.2



18 mA

VIH HIGH Level Input Voltage 4.5–5.5 2.0 V

VIL LOW Level Input Voltage 4.5–5.5 0.8 V

VOH HIGH Level Output Voltage 4.5–5.5 See Figure 3 V VIN

VCC

IIInput Leakage Current 0–5.5

1.0

VIN

5.5V

IOFF “OFF” Leakage Current 5.5

10.0

A, B,

VCC

RON Switch On Resistance (Note 5) 4.5 5.0 7.0

VIN

0V, II

64 m A

5.0 7.0

VIN

0V, II

30 m A

35.0 50.0

VIN

2.4V, II

15 mA

ICC Quiescent Supply Current VIN

VCC or GND, IO

Switch On 5.5 0.8 1.5 mA OE

GND

Switch Off 5.5 10.0

AOE

VCC

ICC Increase in ICC per Input (Note 6) 5.5 0.8 2.5 mA OE

3.4V, IO

Control Input only.

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NC7SZD384

AC Electrical Characteristics

Note 7: All typical values are VCC

5.0V, TA

Note 8: This parameter is guaranteed by design but is not tested. The bus switch contributes no propagation delay other than the RC delay of the typical On Resistance of the

switch and the 50 pF load capacitance, when driven by an ideal voltage source (zero output impedance).

Capacitance (Note 9)

Note 9: TA

C f

1MHz

AC Loading and Waveforms

FIGURE 1. AC Test Circuit

Note: Input driven by 50

source terminated in 50

CL includes load and stray capacitance.

Input PRR

1.0 MHz tw

500 ns.

FIGURE 2. AC W aveforms



C to



Symbol Parameter VCC CL

50 pF, RU

500

Units Conditions Figure

(V) Min Typ

(Note 7) Max Number

tPHL, Propagation Delay Bus-to-Bus 4.5–5.5 0.25 ns VI

OPEN Figures

1, 2

tPLH (Note 8)

tPZL, Output Enable Time 4.5–5.5 1.5 7.5 ns VI

7V for tPZL Figures

1, 2

tPZH VI

OPEN for tPZH

tPLZ, Output Disable Time 4.5–5.5 1.0 6.0 ns VI

7V for tPLZ Figures

1, 2

tPHZ VI

OPEN for tPHZ

Symbol Parameter Typ Max Units Conditions

CIN Control Pin Input Capacitance 2 5 pF VCC

5.0V

CI/O Input/Output Cap acit ance 4.5 10 pF VCC

5.0V

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NC7SZD384

DC Characteristics

FIGURE 3. Typical High Level Output Voltage vs. Supply Voltage

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NC7SZD384

Tape and Reel Specification

TAPE FORMAT for SC70 and SOT23

TAPE DIMENSIONS inches (millimeters)

Package Tape Number Cavity Cover Tape

Designator Section Cavities Status Status

Leader (Start End) 125 (typ) Empty Sealed

M5X, P5X Carrier 3000 Filled Sealed

Trailer (Hub End) 75 (typ) Empty Sealed

Package Tape Size DIM A DIM B DIM F DIM KoDIM P1 DIM W

SC70-5 8 mm 0.093 0.096 0.138

0.004 0.053

0.004 0.157 0.315

0.004

(2.35) (2.45) (3.5

0.10) (1.35

0.10) (4) (8

0.1)

SOT23-5 8 mm 0.130 0.130 0.138

0.002 0.055

0.004 0.157 0.315

0.012

(3.3) (3.3) (3.5

0.05) (1.4

0.11) (4) (8

0.3)

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NC7SZD384

TAPE FORMAT for MicroPak

REEL DIMENSIONS inches (millimeters)

Package Tape Number Cavity Cover Tape

Designator Section Cavities Status Status

Leader (S tart End) 125 (typ) Empty Sealed

L6X Carrier 5000 Filled Sealed

Trailer (Hub End) 75 (typ) Empty Sealed

Tape SizeABCDN W1 W2 W3

8 mm 7.0 0.059 0.512 0.795 2.165 0.331



0.059/



0.000 0.567 W1



0.078/



0.039

(177.8) (1.50) (13.00) (20.20) (55.00) (8.40



1.50/



0.00) (14.40) (W1



2.00/



1.00)

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NC7SZD384

Physical Dimensions inches (millimeters) unless otherwise noted

5-Lead SOT23, JEDEC MO-178, 1.6mm

Package Number MA05B

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NC7SZD384

Physical Dimensions inches (millimeters) unless otherwise noted (Continued)

5-Lead SC70, EIAJ SC-88a, 1.25mm Wide

Package Number MAA05A

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NC7SZD384

Physical Dimensions inches (millimeters) unless otherwise noted (Continued)

Pb-Free 6-Lead MicroPak, 1.0mm Wide

Package Number MAC06A

11 www.fairchildsemi.com

NC7SZD384 1-Bit Low Power Bus Switch with Level Shifting

DISCLAIMER

FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY

PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY

ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT

CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.

LIFE SUPPORT POLICY

FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES

OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION

As used herein:

1. Life support devices or systems are devices or syste ms

which, (a) are intended for surgical implant into the body, or

(b) support or sustain life, or (c) whose failure to perform

when properly used in accordance with instructions for use

provided in the labeling, can be reasonably expected to

result in significant injury to the user.

2. A critical component is any component of a life support

device or sys tem whose failure to perform can be reason-

ably expected to cause the failure of the life support device

or system, or to affect its safety or effectiveness.

PRODUCT STATUS DEFINITIONS

Definition of terms

Datasheet Identification Product Status Definition

Advance Information Formative or In Design This datasheet contains the design specifications for product develop-

ment. Specifications may change in any manner without notice.

Preliminary First Production This datasheet contains preliminary data, and supplementary data will

be published at a later date. Fairchild Semiconductor reserves the right

to make changes at any time without notice in order to improve design.

No Identification Needed Full Production This datasheet contains final specifications. Fairchild Semiconductor

reserves the right to make changes at any time without notice in order

to improve design.

Obsolete Not In Production This datasheet contains specifications on a product that has been dis-

continued by Fairchild Semiconductor . The datasheet is printed for ref-

erence information only.