YB1921
3-Pin Microprocessor Reset Monitor
Pin Configuration
Pin Description
Pin No.
2
Symbol
GND
Ground
Description
RESET
1
VCC
3
S809La
1
GND
2
RESET
RESET output remains low while Vcc is
below the reset voltage threshold and
for 240msec(typ) after Vcc rises above
reset threshold
Supply Voltage (typ.)
3
Vcc
Ordering/Marking Information
Reset Vcc
threshold (V)
4.63
4.38
4.00
SOT-23
3.08
2.93
2.63
Package
Part Number
Marking
S809La
S809Ma
S809Ja
S809Ta
S809Sa
S809Ra
•
Marking Information
Starting with 0, a bar underlined 0 is for
production year 2006, on top of 9 is for year 2007.
And underlined 9 is for year 2008
The next character is marked on top of 8 for
2009, and underlined 8 for 2010. The naming
pattern continues with consecutive characters for
later years.
The last character is the week code. (A-Z: 1-26,
YB1921
LB-F
YB1921
MB-F
YB1921
JB-F
YB1921
TB-F
YB1921
SB-F
YB1921
RB-F
•
•
•
•
a-z: 27-52)
A dot on top right corner is for lead-free process.
•
Ordering Information
YB1921
www.yobon.com.tw
4
YOBON [ YOBON TECHNOLOGIES,INC. ]
