CAT812STBIGT10中文资料

? 2005 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice 1Doc. No. 3005, Rev. R

CAT811, CAT812

2

Doc. No. 3005, Rev. R

? 2005 by Catalyst Semiconductor, Inc.

Characteristics subject to change without notice

ORDERING INFORMATION

PIN DESCRIPTIONS

TOP MARKING

Notes

1)The “YM” in the SOT-143 package marking indicates the Year

and Month of production.

2)All NiPdAu devices will be marked to indicate product type and

package. Threshold and full part numbers will be provided on box and reel labels as well as all Shipping documents.

d n a s t r a P d l o h s

e r h T 341-T O S )

1(341-T O S n S n e e r G d a e L e t t a M h s i n i F )

2()1(341-T O S n e e r G d a e L u A d P i N h s i n i F )

2()1(8T A C 11L M Y M A M Y H D E M

Y R 8T A C 11M M Y N A M Y J D J 118T A C A M Y Z M Y K C T 118T A C M Y P A M Y L D S 118T A C M Y Q A M Y M D R 118T A C M Y R A M Y N D Z 118T A C A M Y Y M Y P C L 218T A C M Y S A D M Y R E M

Y S M 218T A C M Y T A D M Y T J 218T A C M Y U A D M Y U T 218T A C M Y V A D M Y V S 218T A C M Y W A D M Y W R 218T A C M Y X A D M Y X Z

218T A C M

Y I C M

Y Y C * NiPdAu is a Lead Finish Option on the Green

Packages only. Unless indicated with the “G ” green packages are shipped with a Sn Matte Lead Finish.

CAT811, CAT812

3

Doc No. 3005, Rev. R

? 2005 by Catalyst Semiconductor, Inc.

Characteristics subject to change without notice

ELECTRICAL CHARACTERISTICS

V CC = Full range, T A = -40°C to +85°C unless otherwise noted. Typical values at T A = +25°C and V CC = 5 V for the L/M/J versions, V CC = 3.3 V for the T/S versions, V CC = 3 V for the R version and V CC = 2.5 V for the Z version.

ABSOLUTE MAXIMUM RATINGS*

Any pin with respect to ground ..........-0.3 V to +6.0 V Input Current, V CC .............................................20 mA Output Current, RESET, RESET......................20 mA Rate of Rise, V CC .............................................................100 V/μs Continuous Power Dissipation

Derate 4mW/°C above 70°C (SOT143)........320 mW

Operating Temperature Range...........-40°C to +85°C Storage Temperature Range............-65°C to +105°C Lead Soldering Temperature (10 sec)..............300°C

*COMMENT

Stresses above those listed under “Absolute Maximum Ratings ” may cause permanent damage to the device. These are stress ratings only,and functional operation of the device at these or any other conditions outside of those listed in the operational sections of this specification is not implied. Exposure to any absolute maximum rating for extended periods may affect device performance and reliability.

CAT811, CAT812

4

Doc. No. 3005, Rev. R

? 2005 by Catalyst Semiconductor, Inc.

Characteristics subject to change without notice

ELECTRICAL CHARACTERISTICS V CC = Full range, T A = -40?C to +85?C unless otherwise noted. Typical values at T A = +25?C and V CC = 5 V for L/M/J versions, V CC = 3.3 V for T/S versions, V CC = 3 V for R version and V CC = 2.5 V for Z version.

(continued)

Note 1: Production testing done at T A = +25?C; limits over temperature guaranteed by design only.Note 2: RESET output for the CAT811; RESET output for the CAT812Note 3: Glitches of 100 ns or less typically will not generate a reset pulse.

CAT811, CAT812

5

Doc No. 3005, Rev. R

? 2005 by Catalyst Semiconductor, Inc.

Characteristics subject to change without notice

TYPICAL OPERATING CHARACTERISTICS

V CC = Full range, T A = -40?C to +85?C unless otherwise noted. Typical values at T A = +25?C and V CC = 5 V for L/M/J versions, V CC =3.3 V for T/S versions, V CC = 3 V for R version and V CC = 2.5 V for Z version.

SUPPLY CURRENT VS. TEMPERATURE

(NO LOAD, CAT8xxR/S/T/Z)12

1086420

-50 0 50 100 150

S U P P L Y C U R R E N T (μA )

TEMPERATURE (?C)

POWER-DOWN RESET DELAY VS. TEMPERATURE

(CAT8xxR/S/T/Z)14

12108642

P O W E R -D O W N R E S E T D E L A Y (μS )

TEMPERATURE (?C)POWER-UP RESET TIMEOUT

VS. TEMPERATURE

260

240220200

180160

P O W E R -U P R E S E T T I M E O U T (m S )

TEMPERATURE (?C)NORMALIZED RESET THRESHOLD

VS. TEMPERATURE

1.0002

10.99980.99960.99940.99920.9990.9988

0 20 40 60 80 100 120

N O R M A L I Z E D T H R E S H O L D

TEMPERATURE (?C)

-50 0 50 100 150

-50 0 50 100 150

CAT811, CAT812

6

Doc. No. 3005, Rev. R

? 2005 by Catalyst Semiconductor, Inc.

Characteristics subject to change without notice

DETAILED DESCRIPTIONS

RESET TIMING

The reset signal is asserted LOW for the CAT811 and HIGH for the CAT812 when the power supply voltage falls below the threshold trip voltage and remains asserted for at least 140ms after the power supply voltage has risen above the threshold.

Figure 1. Reset Timing Diagram

Figure 2. Maximum Transient Duration Without Causing a Reset Pulse vs. Reset Comparator Overdrive

30

25201510 50

T R A N S I E N T D U R A T I O N [μs )

RESET OVERDRIVE V TH - V CC [mV]

1 10 100 1000

5V 0V

5V 0V 5V

0V

Power Supply Voltage RESET

RESET

V CC TRANSIENT RESPONSE

The CAT811/812 protect μPs against brownout failure.Short duration transients of 4μsec or less and 100 mV amplitude typically do not cause a false RESET.Figure 2 shows the maximum pulse duration of negative-going V CC transients that do not cause a reset condition.

As the amplitude of the transient goes further below the threshold (increasing V TH - V CC ), the maximum pulse duration decreases. In this test, the V CC starts from an initial voltage of 0.5V above the threshold and drops below it by the amplitude of the overdrive voltage (V TH - V CC ).

CAT811, CAT812

7

Doc No. 3005, Rev. R

? 2005 by Catalyst Semiconductor, Inc.

Characteristics subject to change without notice

VALID RESET WITH V CC UNDER 1.0 V

To ensure that the CAT811 RESET pin is in a known state when V CC is under 1.0 V, a 100 k ? pull-down resistor between RESET pin and GND is recommended;the value is not critical. For the CAT812, a pull-up resistor from RESET pin to V CC is needed.

Figure 3. RESET Valid with V CC Under 1.0 V Figure 4. RESET Valid with V CC Under 1.1 V

Figure 5. Bi-directional Reset Pin Interfacing

(For example: 68HC11)

BI-DIRECTIONAL RESET PIN INTERFACING The CAT811/812 can interface with μP/μC bi-directional reset pins by connecting a 4.7 k ? resistor in series with the CAT811/812 reset output and the μP/μC bi-directional reset pin.

CAT811, CAT812

8

Doc. No. 3005, Rev. R

? 2005 by Catalyst Semiconductor, Inc.

Characteristics subject to change without notice

OTHER SUPERVISORY PRODUCTS

0.20

GAUGE PLANE

PACKAGE INFORMATION Plastic SOT143 (4-Pin)

Catalyst Semiconductor, Inc.Corporate Headquarters 1250 Borregas Avenue Sunnyvale, CA 94089Phone: 408.542.1000Fax: 408.542.1200

https://www.sodocs.net/doc/ab16261564.html,

Copyrights, Trademarks and Patents

Trademarks and registered trademarks of Catalyst Semiconductor include each of the following:DPP ?

AE 2 ?

MiniPot ?

Catalyst Semiconductor has been issued U.S. and foreign patents and has patent applications pending that protect its products. For a complete list of patents issued to Catalyst Semiconductor contact the Company ’s corporate office at 408.542.1000.

CATALYST SEMICONDUCTOR MAKES NO WARRANTY, REPRESENTATION OR GUARANTEE, EXPRESS OR IMPLIED, REGARDING THE SUITABILITY OF ITS PRODUCTS FOR ANY PARTICULAR PURPOSE, NOR THAT THE USE OF ITS PRODUCTS WILL NOT INFRINGE ITS INTELLECTUAL PROPERTY RIGHTS OR THE RIGHTS OF THIRD PARTIES WITH RESPECT TO ANY PARTICULAR USE OR APPLICATION AND SPECIFICALLY DISCLAIMS ANY AND ALL LIABILITY ARISING OUT OF ANY SUCH USE OR APPLICATION, INCLUDING BUT NOT LIMITED TO, CONSEQUENTIAL OR INCIDENTAL DAMAGES.

Catalyst Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Catalyst Semiconductor product could create a situation where personal injury or death may occur.

Catalyst Semiconductor reserves the right to make changes to or discontinue any product or service described herein without notice. Products with data sheets labeled "Advance Information" or "Preliminary" and other products described herein may not be in production or offered for sale.

Catalyst Semiconductor advises customers to obtain the current version of the relevant product information before placing orders. Circuit diagrams illustrate typical semiconductor applications and may not be complete.

REVISION HISTORY

Date Rev.Reason

10/22/03L Updated Ordering Information 12/22/2003

M

Updated Features

Replaced power-up reset timeout vs. temperature graph with updated one

Replaced VCC Transient Response graph with updated one

3/22/04N General data sheet updates

3/25/2004O Updated Electrical Characteristics (Reset Active Timeout Period Max)

3/25/2004P Corrected Pin Configure diagram 9/28/2004Q Minor changes 12/28/2005

R

Updated Features

Updated Ordering Information Updated Yop Marking

Publication #:3005Revison:R

Issue date:12/28/05