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7438 数据表(PDF) 2 Page - Fairchild Semiconductor

部件名 7438
功能描述  Quad 2-Input NAND Buffers with Open-Collector Outputs
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制造商  FAIRCHILD [Fairchild Semiconductor]
网页  http://www.fairchildsemi.com
标志 FAIRCHILD - Fairchild Semiconductor

7438 数据表(HTML) 2 Page - Fairchild Semiconductor

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2
Absolute Maximum Ratings(Note 1)
Note 1: The “Absolute Maximum Ratings” are those values beyond which
the safety of the device cannot be guaranteed. The device should not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables are not guaranteed at the absolute maximum ratings.
The “Recommended Operating Conditions” table will define the conditions
for actual device operation.
Recommended Operating Conditions
Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Switching Characteristics
at VCC = 5V and TA = 25°C
Note 2: All typicals are at VCC = 5V, TA = 25°C.
Supply Voltage
7V
Input Voltage
5.5V
Output Voltage
7V
Operating Free Air Temperature Range
0
°C to +70°C
Storage Temperature Range
−65°C to +150°C
Symbol
Parameter
Min
Nom
Max
Units
VCC
Supply Voltage
4.75
5
5.25
V
VIH
HIGH Level Input Voltage
2
V
VIL
LOW Level Input Voltage
0.8
V
VOH
HIGH Level Output Voltage
5.5
V
IOL
LOW Level Output Current
48
mA
TA
Free Air Operating Temperature
0
70
°C
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 2)
VI
Input Clamp Voltage
VCC = Min, II = −12 mA
−1.5
V
ICEX
HIGH Level
VCC = Min, VO = 5.5V
250
µA
Output Current
VIL = Max
VOL
LOW Level
VCC = Min, IOL = Max
0.4
V
Output Voltage
VIH = Min
II
Input Current @ Max Input Voltage
VCC = Max, VI = 5.5V
1
mA
IIH
HIGH Level Input Current
VCC = Max, VI = 2.4V
40
µA
IIL
LOW Level Input Current
VCC = Max, VI = 0.4V
−1.6
mA
ICCH
Supply Current with Outputs HIGH
VCC = Max
5
8.5
mA
ICCL
Supply Current with Outputs LOW
VCC = Max
34
54
mA
Symbol
Parameter
Conditions
Min
Max
Units
tPLH
Propagation Delay Time
CL = 45 pF
22
ns
LOW-to-HIGH Level Output
RL = 133Ω
tPHL
Propagation Delay Time
18
ns
HIGH-to-LOW Level Output


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