PT7M7809STEX Pericom Semiconductor, PT7M7809STEX Datasheet

PT7M7809STEX

Manufacturer Part Number

PT7M7809STEX

Description

IC SUPERVISOR 2.93V SOT23-3

Manufacturer

Pericom Semiconductor

Type

Simple Reset/Power-On Resetr

Datasheet

1.PT7M7809RTEX.pdf (8 pages)

Specifications of PT7M7809STEX

Number Of Voltages Monitored

Output

Push-Pull, Totem Pole

Reset

Active Low

Reset Timeout

140 ms Minimum

Voltage - Threshold

2.93V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

SOT-23-3, TO-236-3, Micro3™, SSD3, SST3

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

PT7M7809STEXTR

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Features

Ordering Information

Note: “x” refers to voltage range, see below table.

Suffix: X—Monitored Voltage

Block Diagram

PT0249(08/09)

Part Number

PT7M7803XTE

PT7M7809XTE

Precision supply-voltage monitor

- 4.63V (PT7M7803/09/10L)

- 4.26V (PT7M7803/09/10M)

- 3.08V (PT7M78003/09/10T)

- 2.93V (PT7M78003/09/10S)

- 2.63V (PT7M7803/09/10R)

- 2.32V (PT7M7803/09/10Z)

140ms(min) reset pulse width

Push-Pull

PT7M7809

Push-Pull

PT7M7810

Open-Drain

PT7M7803

12µA Supply Current

Guaranteed Reset(/Reset) Valid to V

Power Supply Transient Immunity

No External Components

Reset Threshold (V)

/RESET

RESET

/RESET

Lead free and Green SOT23-3

Output

output

4.63

Package

Configurations

configuration

RST

= +1.0V

4.26

for

3.08

Description

supervisory circuits used to monitor the power supplies

in µP and digital systems. They provide excellent circuit

reliability and low cost by eliminating external

components and adjustments when used with +3.3V,

+3.0V, or 2.5V powered circuits.

a reset signal whenever the VCC supply voltage declines

below a preset threshold, keeping it asserted for at least

140ms after VCC has risen above the reset threshold.

Reset thresholds suitable for operation with a variety of

supply voltages are available.

while the PT7M7809/10 have push-pull outputs. The

PT7M7803’s open-drain /Reset output requires a pull-up

resistor that can be connected to a voltage higher than

output while the PT7M7810 has an active-high RESET

output. The reset comparator is designed to ignore fast

transients on V

in the correct logic state for V

ideal for use in portable equipment. The ICs are

available in 3 pin SOT23 packages.

Reset Logic

and Timer

. The PT7M7803/09 have an active-low /RESET

The PT7M7803/09/10 are microprocessor (µP)

These circuits perform a single function: they assert

The PT7M7803 has an open-drain output stage,

Low supply current makes the PT7M7803/09/10

2.93

, and the outputs are guaranteed to be

2.63

µP Supervisor Circuits

RESET

down to 1V.

PT7M7803/09/10

2.32

Data Sheet

Ver: 8

Related parts for PT7M7809STEX

PT7M7809STEX Summary of contents

Page 1

Features Precision supply-voltage monitor - 4.63V (PT7M7803/09/10L) - 4.26V (PT7M7803/09/10M) - 3.08V (PT7M78003/09/10T) - 2.93V (PT7M78003/09/10S) - 2.63V (PT7M7803/09/10R) - 2.32V (PT7M7803/09/10Z) 140ms(min) reset pulse width Push-Pull /RESET Output PT7M7809 Push-Pull RESET Output PT7M7810 Open-Drain /RESET output PT7M7803 12µA ...

Page 2

Pin Configuration Pin Description Pin Type Supply Voltage. Reset is asserted when V VCC - remains asserted until V Period (t ) once V RS GND - Ground Active-Low Reset Output (Push-Pull). It goes low when Vcc is below ...

Page 3

Typical Application Circuit PT0249(08/09) µP Supervisor Circuits 3 Data Sheet PT7M7803/09/10 Ver: 8 ...

Page 4

Maximum Ratings Storage Temperature ............................................................-65 Ambient Temperature with Power Applied.......................... -40 Supply Voltage to Ground Potential (Vcc to GND) ..............-0.3V to +6.0V DC Input Voltage (All inputs except Vcc and GND)......-0. Output Current (All outputs) ..........................................................20mA ...

Page 5

DC Electrical Characteristics ( 5.5V -40~85ºC, unless otherwise noted.)(Note Symbol Description V Operating Voltage Range CC I Supply Current CC I Supply Current CC V Threshold Voltage(Falling- RST ...

Page 6

Mechanical Information TE (Lead free and Green SOT23-3) PT0249(08/09) µP Supervisor Circuits X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS Note: 1) Controlling dimensions in millimeters. 2) Ref: JEDEC TO-236H 6 Data Sheet PT7M7803/09/10 Ver: 8 ...

Page 7

Marking Information PART NO. 2 BIT CODE (See Below Table) Example: AAPJ PART NO.: PT7M7809LT DATE CODE: YEAR 2005 WW10 No. Part No. Code PT7M7809L 1 AA PT7M7809M AB 2 PT7M7809T 3 AC PT7M7809S 4 AD PT7M7809R 5 AE ...

Page 8

Email: support@pti.com.cn China: No. 20 Building, 3/F, 481 Guiping Road, Shanghai, 200233, China Tel: (86)-21-6485 0576 Asia Pacific: Unit 1517, 15/F, Chevalier Commercial Centre, 8 Wang Hoi Rd, Kowloon Bay, Hongkong Tel: (852)-2243 3660 U.S.A.: 3545 North First Street, ...

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