DS_8009C_025
73S8009C Data Sheet
VDD
VERY
WEAK
PFET
Pull-up
Disable
ESD
To
circuit
PIN
ESD
VERY
WEAK
NFET
Pull-down
Enable
Note:
Pins CMDVCC%, CMDVCC#, CS have the pull-up enabled.
Pins RSTIN, CLKIN, PRES, EXT_RST have the pull-down enabled.
Pin OFF_ACK has a 100 kΩ resistor connected to pin OFF_REQ internally.
Figure 19: General Input Circuit
VDD
ESD
STRONG
PFET
Output
Disable
PIN
ESD
Data
From
circuit
STRONG
NFET
100k ohm
To
OFF_ACK
pad
Notes: Strong PFET or NFET is approximately 100 Ω
Very strong PFET or NFET is approximately 50 Ω
Medium strength PFET is approximately 1 kΩ
Very weak PFET or NFET is approximately 1 MΩ
The diodes represent ESD protection devices that will conduct current if forward biased.
Figure 20: OFF_REQ Interface Circuit
Rev. 1.4
29
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
