LM80CIMT-5 NSC [National Semiconductor], LM80CIMT-5 Datasheet - Page 5

• Manufacturer Part Number: LM80CIMT-5
• Description: Serial Interface ACPI-Compatible Microprocessor System Hardware Monitor
• Manufacturer: NSC [National Semiconductor]

Symbol
FAN RPM-to-DIGITAL CONVERTER
DIGITAL OUTPUTS: A0/NTEST_OUT, INT
V
V
OPEN DRAIN OUTPUTS: GPO, RST_OUT/OS, CI
V
I
OPEN DRAIN SERIAL BUS OUTPUT: SDA
V
I
DIGITAL INPUTS: A0/NTEST_Out, A1-A2, BTI, CI (Chassis Intrusion), INT_IN, and NTEST_IN/Reset_IN
V
V
SERIAL BUS INPUTS (SCL, SDA) and FAN TACH PULSE INPUTS (FAN1, FAN2)
V
V
ALL DIGITAL INPUTS Except for BTI
I
I
C
OH
OH
IN(1)
IN(0)
The following specifications apply for +2.8 V
IN0-IN6 R
25˚C.(Note 7)
OUT(1)
OUT(0)
OUT(0)
OUT(0)
IN(1)
IN(0)
IN(1)
IN(0)
DC Electrical Characteristics
IN
Fan RPM Error
Full-scale Count
FAN1 and FAN2 Nominal Input
RPM (See Section 6.0 )
Internal Clock Frequency
Logical “1” Output Voltage
Logical “0” Output Voltage
Logical “0” Output Voltage
High Level Output Current
RST_OUT/OS, CI
Pulse Width
Logical “0” Output Voltage
High Level Output Current
Logical “1” Input Voltage
Logical “0” Input Voltage
Logical “1” Input Voltage
Logical “0” Input Voltage
Logical “1” Input Current
Logical “0” Input Current
Digital Input Capacitance
S
= 25 , unless otherwise specified. Boldface limits apply for T
Parameter
DC
V
(Continued)
+
+3.8 V
+25˚C
−10˚C
−25˚C
Divisor = 1, Fan Count = 153
(Note 12)
Divisor = 2, Fan Count = 153
(Note 12)
Divisor = 3, Fan Count = 153
(Note 12)
Divisor = 4, Fan Count = 153
(Note 12)
+25˚C
−10˚C
−25˚C
I
V
at V
I
V
at V
I
at V
I
V
I
V
at V
V
V
V
OUT
OUT
OUT
OUT
OUT
+
+
OUT
+
OUT
IN
IN
DC
= +5.75V, I
= +4.25V, I
= +5.75V, I
+
+
+
+
= V
= 0 V
= +5.0 mA at
= −5.0 mA at
=− 5.0 mA
= −3.0 mA at V
= −3.0 mA at
5
for LM80CIMT-3, +4.25 V
= +2.8V
= +3.8V
= +5.75V,
= V
= +3.8V
= V
+
T
T
T
T
T
T
Conditions
+
+
DC
A
A
A
A
A
A
+75˚C
+100˚C
+125˚C
+75˚C
+100˚C
+125˚C
OUT
OUT
OUT
A
= −3.0 mA
= +3.0 mA
= −3.0 mA
= T
+
= +3.8V
J
= T
MIN
DC
to T
(Note 8)
Typical
−0.005
0.005
V
8800
4400
2200
1100
22.5
22.5
22.5
MAX
0.1
0.1
+
30
20
; all other limits T
+5.75 V
(Note 9)
0.7 x V
0.3 x V
Limits
DC
20.2
24.8
19.1
25.9
±
±
±
255
100
100
2.4
0.4
0.4
0.4
2.0
0.8
−1
18
27
10
1
10
15
20
for LM80CIMT-5,
+
+
www.national.com
A
= T
kHz (max)
kHz (max)
kHz (max)
kHz (min)
kHz (min)
kHz (min)
µA (max)
µA (max)
µA (max)
ms (min)
µA (min)
% (max)
% (max)
% (max)
(Limits)
V (max)
V (max)
V (max)
V (min)
V (min)
V (min)
V (min)
V (min)
(max)
Units
RPM
RPM
RPM
RPM
J
pF
=