CAT859 ONSEMI [ON Semiconductor], CAT859 Datasheet - Page 6

• Manufacturer Part Number: CAT859
• Description: 3-Pin Microprocessor Power Supply Supervisors
• Manufacturer: ONSEMI [ON Semiconductor]

CAT853, CAT863, CAT859, CAT869
VALID RESET WITH V
To ensure that the CAT859 and CAT869 RESET
is in a known state when V
pull-down resistor between RESET
recommended.
BI-DIRECTIONAL RESET PIN INTERFACING
The CAT859 and CAT869 can interface with µP/µC
bi-directional reset pins by connecting a 4.7 kΩ
resistor in series with the CAT859 and CAT869 reset
output and the µP/µC bi-directional reset pin.
Doc. No. MD-3026 Rev. G
Power
Supply
Figure 3. RESET
¯¯¯¯¯¯ Valid with V
Power
Supply
CAT8x9
CC
GND
V
CC
UNDER 1.0 V
CC
RESET
¯¯¯¯¯¯ pin and GND is
is under 1.0 V, a > 10 kΩ
Figure 4. Bi-directional Reset Pin Interfacing
CAT8x9
CC
GND
V
CC
Under 1.0 V
RESET
¯¯¯¯¯¯ pin
Bi-directional
I/O Pin
6
RESET
INPUT
BUF
GND
V
µP
CC
Buffered
RESET
(For example:
68HC11)
Characteristics subject to change without notice
© 2009 SCILLC. All rights reserved.