SS809 SSC [Silicon Standard Corp.], SS809 Datasheet

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SS809

Manufacturer Part Number
SS809
Description
3-Pin Microprocessor Reset Circuits
Manufacturer
SSC [Silicon Standard Corp.]
Datasheet
9/20/2006 Rev.3.01
FEATURES
APPLICATIONS
TYPICAL APPLICATION CIRCUIT
Ultra-low supply current 1 A (typ.)
Guaranteed reset valid to Vcc=0.9V
Available in three output types:
Power-on reset pulse width min. 140ms
Internally fixed threshold 2.3V, 2.6V, 2.9V, 3.1V,
Tight voltage threshold tolerance: 1.5%
Packaged in RoHS-compliant SOT-23-3
l
l
l
l
Notebook Computers
Digital Still Cameras
PDAs
Critical Microprocessor Monitoring
Open-drain active low (SS809N-xxGx)
Push-pull active high (SS810-xxGx)
Push-pull active low
4.0V, 4.4V, 4.6V
(SS809-xxGx)
V
CC
www.SiliconStandard.com
( SS810G)
SS809G
VCC
GND
(RESET)
RESET
3-Pi n Microprocessor Reset Circuits
Push -Pull Output
DESCRIPTION
The SS809G and SS810G are low-power microprocessor
(µP) supervisory circuits used to monitor power supplies
in µP and digital systems. They improve circuit reliability
and reduce cost by eliminating external components.
with Vcc ranging from 6.0V down to 0.9V. The reset
signal lasts for a minimum period of 140ms whenever the
V
the SS809G and SS810G were designed with a reset
comparator to help identify invalid signals lasting less
than 140ms. The only difference between the two
devices is that one has an active -low RESET output
and the other an active -high RESET output .
Low supply current (1 A) makes the SS809G and SS810G
ideal for portable equipment. The devices are available in
a SOT-23-3 package.
CC
These devices provide valid signals in applications
RESET
INPUT
supply voltage falls below a preset threshold. Both
VCC
GND
P
SS809/810G
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SS809 Summary of contents

Page 1

... The only difference between the two devices is that one has an active -low RESET output and the other an active -high RESET output . Low supply current (1 A) makes the SS809G and SS810G ideal for portable equipment. The devices are available in a SOT-23-3 package. ...

Page 2

... TR: T ape and reel Package type GU: RoHS-compliant Pb-free SOT -2 3-3 Reset threshold voltage 23: 2.3V 26: 2.6V 29: 2.9V 31: 3.1V 40: 4.0V 44: 4.4V 46: 4.6V Output type Example: SS809 -31GU TR à 3.1V , push- pull version in RoHS-compliant SOT -23-3 , shipped in tape and reel SOT -23 Part Marking Part No. Marking SS809-23GU RA23P RA26P SS809-26GU SS809-29GU RA29P SS809-31GU ...

Page 3

... Lead Temperature (Soldering) 10 sec Note1: Any stress beyond the Absolute Maximum Ratings above may cause permanent damage to the device. TEST CIRCUIT 9/20/2006 Rev.3. Vin VCC RESET Iin GND SS809G 1 www.SiliconStandard.com SS809/810G -0.3V ~6.5V -0.3V ~ (VCC+0.3V) 20mA 20mA 320mW - 125 C 260 ...

Page 4

... Reset Active Timeout Period RESET Output Voltage RESET Output Voltage Note2: RESET output is for the SS809G; RESET output is for the SS810G. Note3: Specifications for operating temperature ranges from - are guaranteed by Statistical Quality Controls (SQC), with no production testing. 9/20/2006 Rev.3.01 ...

Page 5

... 100 -60 Fig 4 Power-Down Reset Delay vs. Temperature 600 500 400 300 V =3.1V TH 200 =2.3V TH 100 100 -60 Fig 6 Power-Up Reset Timeout vs. Temperature www.SiliconStandard.com SS809/810G V =2. =50mV OD V =100mV OD V =200mV OD -40 - Temperature ( ...

Page 6

... GND PIN DESCRIPTIONS GND Pin : Ground. RESET Pin (SS809G) : Active low output pin. RESET Output remains low while Vcc is below the reset RESET P in (SS810G) : Active high output pin. RESET output remains high while Vcc is below the reset threshold. Vcc Pin : Supply voltage ...

Page 7

... RESET remains low for the reset timeout period. BENEFITS THRESHOLD The SS809G and SS810G with specified voltage as 5V ± 10 ±10% are ideal for systems using a 5V ± ±5% power supply. The reset is guaranteed to assert after the power supply falls out of regulation, but before the power drops below the minimum specified operating voltage range of the system ICs ...

Page 8

... No license is granted, whether expressly or by implication, in relation to the use of any products described herein or to the use of any information provided herein, under any patent or other intellectual property rights of Silicon Standard Corporation or any third parties. 9/20/2006 Rev.3.01 C SYMBOL www.SiliconStandard.com SS809/810G MIN MAX A 1.00 1.30 — 0.10 0.70 0.90 b 0.35 0.50 C ...

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