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HD74HC148FPEL 参数 Datasheet PDF下载

HD74HC148FPEL图片预览
型号: HD74HC148FPEL
PDF下载: 下载PDF文件 查看货源
内容描述: 8到3行八路优先编码器 [8-to-3-line Octal Priority Encoder]
分类和应用: 运算电路逻辑集成电路光电二极管编码器
文件页数/大小: 6 页 / 79 K
品牌: RENESAS [ RENESAS TECHNOLOGY CORP ]
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HD74HC148
Electrical Characteristics
Ta = 25°C
Item
Input voltage
Symbol V
CC
(V)
V
IH
2.0
4.5
6.0
V
IL
2.0
4.5
6.0
2.0
4.5
6.0
4.5
6.0
V
OL
2.0
4.5
6.0
4.5
Input current
Quiescent supply
current
Iin
I
CC
6.0
6.0
6.0
Min
1.5
3.15
4.2
1.9
4.4
5.9
4.18
5.68
Typ
2.0
4.5
6.0
0.0
0.0
0.0
Max
0.5
1.35
1.8
0.1
0.1
0.1
0.26
0.26
±0.1
4.0
Ta = –40 to+85°C
Min
1.5
3.15
4.2
1.9
4.4
5.9
4.13
5.63
Max
0.5
1.35
1.8
0.1
0.1
0.1
0.33
0.33
±1.0
40
V
I
OH
= –4 mA
I
OH
= –5.2 mA
Vin = V
IH
or V
IL
I
OL
= 20
µA
V
Unit
V
Test Conditions
Output voltage
V
OH
V
Vin = V
IH
or V
IL
I
OH
= –20
µA
I
OL
= 4 mA
I
OL
= 5.2 mA
µA
Vin = V
CC
or GND
µA
Vin = V
CC
or GND, Iout = 0
µA
Switching Characteristics
(C
L
= 50 pF, Input t
r
= t
f
= 6 ns)
Ta = 25°C
Item
Propagation delay
time
Symbol V
CC
(V)
t
PLH
, t
PHL
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
Min
Typ
15
16
18
12
12
12
5
5
Max
230
46
39
250
50
43
270
54
46
230
46
39
250
50
43
270
54
46
75
15
13
10
Ta = –40 to +85°C
Min
Max
290
58
49
315
63
54
340
68
58
290
58
49
315
63
54
340
68
58
90
19
16
10
Unit
ns
Test Conditions
0 - 7 to A
0
- A
2
t
PLH
, t
PHL
ns
0 - 7 to EO
t
PLH
, t
PHL
ns
0 - 7 to GS
t
PLH
, t
PHL
ns
EI to A
0
- A
2
t
PLH
, t
PHL
ns
EI to GS
t
PLH
, t
PHL
ns
EI to EO
Output rise/fall
time
Input capacitance
t
TLH
, t
THL
ns
Cin
pF
Rev.2.00, Oct 11, 2005 page 3 of 5