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參數(shù)資料
| 型號： | 74HCT245 |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 通用總線功能 |
| 英文描述： | 4-Bit Synchronous Binary Counters 16-SO -40 to 85 |
| 中文描述： | 八路總線收發(fā)器，三態(tài) |
| 文件頁數(shù)： | 8/22頁 |
| 文件大?。?/td> | 130K |
| 代理商： | 74HCT245 |
9397 750 14502
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 31 January 2005
8 of 22
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
V
IL
LOW-level input voltage
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
V
I
= V
IH
or V
IL
I
O
=
20
μ
A; V
CC
= 2.0 V
I
O
=
20
μ
A; V
CC
= 4.5 V
I
O
=
20
μ
A; V
CC
= 6.0 V
I
O
=
6.0 mA; V
CC
= 4.5 V
I
O
=
7.8 mA; V
CC
= 6.0 V
V
I
= V
IH
or V
IL
I
O
= 20
μ
A; V
CC
= 2.0 V
I
O
= 20
μ
A; V
CC
= 4.5 V
I
O
= 20
μ
A; V
CC
= 6.0 V
I
O
= 6.0 mA; V
CC
= 4.5 V
I
O
= 7.8 mA; V
CC
= 6.0 V
V
I
= V
CC
or GND; V
CC
= 6.0 V
V
I
= V
IH
or V
IL
; V
O
= V
CC
or GND;
V
CC
= 6.0 V
V
I
= V
CC
or GND; I
O
= 0 A;
V
CC
= 6.0 V
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0.5
1.35
1.8
V
V
V
V
OH
HIGH-level output voltage
1.9
4.4
5.9
3.7
5.2
-
-
-
-
-
V
V
V
V
V
V
OL
LOW-level output voltage
-
-
-
-
-
-
-
0.1
0.1
0.1
0.4
0.4
±
1.0
±
10.0
V
V
V
V
V
μ
A
μ
A
I
LI
I
OZ
input leakage current
OFF-state output current
I
CC
quiescent supply current
-
-
160
μ
A
Table 7:
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
Static characteristics type 74HC245
…continued
Conditions
Min
Typ
Max
Unit
Table 8:
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
T
amb
= 25
°
C
V
IH
HIGH-level input voltage
V
IL
LOW-level input voltage
V
OH
HIGH-level output voltage
Static characteristics type 74HCT245
Conditions
Min
Typ
Max
Unit
V
CC
= 4.5 V to 5.5 V
V
CC
= 4.5 V to 5.5 V
V
I
= V
IH
or V
IL
; V
CC
= 4.5 V
I
O
=
20
μ
A
I
O
=
6 mA
V
I
= V
IH
or V
IL
; V
CC
= 4.5 V
I
O
= 20
μ
A
I
O
= 6.0 mA
V
I
= V
CC
or GND; V
CC
= 5.5 V
V
I
= V
IH
or V
IL
; V
CC
= 5.5 V;
V
O
= V
CC
or GND per input pin;
other inputs at V
CC
or GND; I
O
= 0 A
V
I
= V
CC
or GND; I
O
= 0 A;
V
CC
= 5.5 V
2.0
-
1.6
1.2
-
0.8
V
V
4.4
3.98
4.5
4.32
-
-
V
V
V
OL
LOW-level output voltage
-
-
-
-
0
0.15
-
-
0.1
0.26
±
0.1
±
0.5
V
V
μ
A
μ
A
I
LI
I
OZ
input leakage current
OFF-state output current
I
CC
quiescent supply current
-
-
8.0
μ
A
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