MM74C908 Просмотр технического описания (PDF) - Fairchild Semiconductor
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MM74C908 Datasheet PDF : 5 Pages
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Absolute Maximum Ratings(Note 1)
Voltage at any Input Pin
Voltage at any Output Pin
Operating Temperature Range
Operating VCC Range
Absolute Maximum VCC
ISOURCE
Storage Temperature
Range (TS)
−0.3V to VCC +0.3V
32V
−40°C to +85°C
4V to 18V
19V
500 mA
+150°C
−65°C to +150°C
Lead Temperature (TL)
(Soldering, 10 seconds)
Power Dissipation (PD)
260°C
Refer to Maximum Power
Dissipation vs Ambient
Temperature Graph
Note 1: “Absolute Maximum Ratings” are those values beyond which the
safety of the device cannot be guaranteed. Except for “Operating Tempera-
ture Range” they are not meant to imply that the devices should be oper-
ated at these limits. The Electrical Characteristics table provides conditions
for actual device operation.
DC Electrical Characteristics
Min/Max limits apply across temperature range, unless otherwise noted
Symbol
Parameter
Conditions
Min
CMOS TO CMOS
VIN(1)
Logical “1” Input Voltage
VIN(0)
Logical “0” Input Voltage
IIN(1)
IIN(0)
ICC
Logical “1” Input Current
Logical “0” Input Current
Supply Current
Output “OFF” Voltage
CMOS/LPTTL INTERFACE
VCC = 5V
VCC = 10V
VCC = 5V
VCC = 10V
VCC = 15V, VIN = 15V
VCC = 15V, VIN = 0V
VCC = 15V, Outputs Open Circuit
VIN = VCC, IOUT = −200 µA
VIN(1) Logical “1” Input Voltage
VIN(0) Logical “0” Input Voltage
OUTPUT DRIVE
VCC = 4.75V
VCC = 4.75V
VOUT
Output Voltage
RON
Output Resistance
Output Resistance
IOUT = −300 mA, VCC ≥ 5V, TJ = 25°C
IOUT = −250 mA, VCC ≥ 5V, TJ = 65°C
IOUT = −175 mA, VCC ≥ 5V, TJ = 150°C
IOUT = −300 mA, VCC ≥ 5V, TJ = 25°C
IOUT = −250 mA, VCC ≥ 5V, TJ = 65°C
IOUT = −175 mA, VCC ≥ 5V, TJ = 150°C
Coefficient
θJA
Thermal Resistance
MM74C908
(Note 2)
(Note 2)
Note 2: θJA measured in free air with device soldered into printed circuit board.
3.5
8.0
−1.0
VCC − 1.5
VCC−2.7
VCC−3.0
VCC−3.15
Typ
0.005
−0.005
0.05
−30
VCC−1.8
VCC−1.9
VCC−2.0
6.0
7.5
10
0.55
100
45
AC Electrical Characteristics (Note 3)
Symbol
Parameter
Conditions
tpd1
Propagation Delay
to a Logical “1”
tpd0
Propagation Delay
to a Logic “0”
VCC = 5V, RL = 50Ω,
CL = 50 pF, TA = 25°C
VCC = 10V, RL = 50Ω,
CL = 50 pF, TA = 25°C
VCC = 5V, RL = 50Ω,
CL = 50 pF, TA = 25°C
VCC = 10V, RL = 50Ω,
CL = 50 pF, TA = 25°C
CIN
Input Capacitance
(Note 4)
Note 3: AC Parameters are guaranteed by DC correlated testing.
Note 4: Capacitance is guaranteed by periodic testing.
Min
Typ
150
65
2.0
4.0
5.0
Max
1.5
2.0
1.0
15
0.8
9.0
12
18
0.80
110
55
Max
300
120
10
20
Units
V
V
V
V
µA
µA
µA
V
V
V
V
V
V
Ω
Ω
Ω
%/°C
°C/W
°C/W
Units
ns
ns
µs
µs
pF
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