LM87CIMTX National Semiconductor, LM87CIMTX Datasheet - Page 5

• Manufacturer Part Number: LM87CIMTX
• Description: IC,Data Acquisition System,8-CHANNEL,8-BIT,TSSOP,24PIN,PLASTIC
• Manufacturer: National Semiconductor

Specifications of LM87CIMTX

• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

DAC CHARACTERISTICS
FAN RPM-TO-DIGITAL CONVERTER
DIGITAL OUTPUTS (NTEST_OUT)
OPEN- DRAIN DIGITAL OUTPUTS (SMBData, RESET # , CI, INT # , THERM # )
DIGITAL INPUTS: VID0–VID4, NTEST_IN, ADD/NTEST_OUT, Chassis Intrusion (CI)
SMBus DIGITAL INPUTS (SMBCLK, SMBData)
Tach Pulse Logic Inputs (FAN1, FAN2)
ALL DIGITAL INPUTS
Symbol
V
V
V
V
V
DC Electrical Characteristics
V
V
V
V
V
V
The following specifications apply for +2.8 V
fied. Boldface limits apply for T
I
I
OUT(1)
OUT(0)
OUT(0)
OUT(0)
IN(1)
IN(0)
C
I
HYST
R
C
IN(1)
IN(0)
IN(1)
IN(0)
IN(1)
IN(0)
OH
IN
L
L
DAC Error
Output Load Resistance
Output Load Capacitance
Fan RPM Error
Full-scale Count
FAN1 and FAN2 Nominal Input
RPM (See Section 6.0)
Logical “1” Output Voltage
Logical “0” Output Voltage
Logical “0” Output Voltage (SMBData)
Logical “0” Output Voltage (Others)
High Level Output Current
RESET # and Chassis Intrusion
Pulse Width
Logical “1” Input Voltage
Logical “0” Input Voltage
Logical “1” Input Voltage
Logical “0” Input Voltage
Input Hysteresis Voltage
Logical “1” Input Voltage
Logical “0” Input Voltage
Logical “1” Input Current
Logical “0” Input Current
Digital Input Capacitance
Parameter
A
= T
J
= T
DC
MIN
≤ V
to T
(Continued)
+
≤ +3.8 V
MAX
0 ˚C ≤ T
3.3 V, Code = 255
V
code 192
0 ˚C ≤ T
15)
V
+25 ˚C ≤ T
−10 ˚C ≤ T
−40 ˚C ≤ T
Divisor = 1, Fan Count =
153 (Note 16)
Divisor = 2, Fan Count =
153 (Note 16)
Divisor = 3, Fan Count =
153 (Note 16)
Divisor = 4, Fan Count =
153 (Note 16)
I
V
I
V
I
I
V
V
V
= 3.3 V, Code = 8(Note
; all other limits T
OUT
OUT
OUT
OUT
+
O
+
+
OUT
IN
IN
= 3.3 V, 3/4 Scale,
= +2.8 V
= +3.8 V
= 2.5 V
= V
= 0 V
DC
=
=
= −755 µA
= −3 mA
= V
5
, Analog voltage inputs R
±
±
+
Conditions
A
A
3.0 mA at
3.0 mA at
+
DC
≤ +75 ˚C, V
≤ +75 ˚C, V, V
A
A
A
≤ +75 ˚C
≤ +100 ˚C
≤ +125 ˚C
A
= T
+
J
=
+
= 25 ˚C.(Note 8)
(Note 9)
Typical
8800
4400
2200
1100
+3.7
S
243
45
20
5
= 510 Ω, unless otherwise speci-
(Note 10)
0.7 x V
0.3 x V
Limits
1250
-3.3
±
±
±
255
−12
2.4
0.4
0.4
0.4
2.0
0.8
2.1
0.8
±
20
12
20
12
10
15
20
3
+
+
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µA (max)
µA (max)
pF (max)
ms (min)
µA (min)
% (max)
% (max)
% (max)
% (max)
(Limits)
V (max)
V (max)
V (max)
V (max)
% (min)
Ω (min)
V (min)
V (min)
V (min)
V (min)
V (min)
V (min)
(max)
Units
RPM
RPM
RPM
RPM
mV
pF
%