Electrical Characteristics
Unless otherwise noted, VDD=12 V and TJ=-40°C to +125°C. Currents are defined as positive into the device and
negative out of the device.
Symbol
Parameter
Conditions
Min. Typ. Max. Unit
Supply
VDD
Operating Range
4.5
18.0
0.90
0.85
4.3
V
TTL
CMOS(9)
0.65
0.58
4.0
IDD
Supply Current, Inputs / EN Not Connected
mA
VON
Turn-On Voltage
Turn-Off Voltage
3.5
V
V
VOFF
3.30 3.75
4.10
FAN3121TMX_F085, FAN3122TMX_F085 (Automotive-Qualified Versions)
VOFF
Turn-Off Voltage(13)
Inputs (TTL, FAN312xT)(10)
3.25 3.75
4.15
V
VIL_T
VIH_T
INx Logic Low Threshold
INx Logic High Threshold
0.8
1.0
1.7
V
V
V
2.0
VHYS_T TTL Logic Hysteresis Voltage
FAN3121TMX, FAN3122TMX
0.40 0.70
0.85
IIN+
IIN-
Non-Inverting Input Current
Inverting Input Current
IN from 0 to VDD
IN from 0 to VDD
-1
175
1
µA
µA
-175
FAN3121TMX_F085, FAN3122TMX_F085 (Automotive-Qualified Versions)
IINx_T
IINx_T
IINx_T
IINx_T
Non-inverting Input Current(13)
Non-inverting Input Current(13)
Inverting Input Current(13)
Inverting Input Current(13)
IN=0 V
IN=VDD
IN=0 V
IN=VDD
-1.5
1.5
175.0
-90
µA
µA
µA
µA
90
120
-175 -120
-1.5
1.5
Inputs (CMOS, FAN312xC)(10)
VIL_C
VIH_C
INx Logic Low Threshold
INx Logic High Threshold
30
12
38
55
17
%VDD
%VDD
%VDD
70
24
VHYS_C CMOS Logic Hysteresis Voltage
FAN3121CMX, FAN3122CMX
IIN+
IIN-
Non-Inverting Input Current
Inverting Input Current
IN from 0 to VDD
IN from 0 to VDD
-1
175
1
µA
µA
-175
FAN3121CMX_F085, FAN3122CMX_F085 (Automotive-Qualified Versions)
IINx_C
IINx_C
IINx_C
IINx_C
Non-Inverting Input Current(13)
Non-Inverting Input Current(13)
Inverting Input Current(13)
Inverting Input Current(13)
IN=0 V
IN=VDD
IN=0 V
IN=VDD
-1.5
90
1.5
175
-90
1.5
µA
µA
µA
µA
120
-175 -120
-1.5
ENABLE (FAN3121, FAN3122)
VENL
VENH
Enable Logic Low Threshold
EN from 5 V to 0 V
EN from 0 V to 5 V
1.2
1.8
0.2
68
8
1.6
2.2
0.6
100
17
2.0
2.6
0.8
134
27
V
V
Enable Logic High Threshold
TTL Logic Hysteresis Voltage
Enable Pull-up Resistance
Propagation Delay, CMOS EN (11)
Propagation Delay, TTL EN(11)
VHYS_T
RPU
V
kΩ
ns
ns
tD1, tD2
tD1, tD2
14
21
33
Continued on the following page…
© 2008 Fairchild Semiconductor Corporation
FAN3121 / FAN3122 • Rev. 1.0.2
www.fairchildsemi.com
6
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