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參數(shù)資料
| 型號(hào)： | 74HC_HCT245_3 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Octal bus transceiver; 3-state |
| 中文描述： | 8個(gè)三態(tài)總線收發(fā)器, 3態(tài) |
| 文件頁數(shù)： | 10/22頁 |
| 文件大小： | 130K |
| 代理商： | 74HC_HCT245_3 |
9397 750 14502
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 31 January 2005
10 of 22
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
11. Dynamic characteristics
I
CC
quiescent supply current
V
I
= V
CC
or GND; I
O
= 0 A;
V
CC
= 5.5 V
V
I
= V
CC
2.1 V; other inputs at
V
I
= V
CC
or GND;
V
CC
= 4.5 V to 5.5 V; I
O
= 0 A
-
-
160
μ
A
I
CC
additional quiescent supply
current per input pin
An or Bn inputs
OE input
DIR input
-
-
-
-
-
-
196
735
441
μ
A
μ
A
μ
A
Table 8:
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
Static characteristics type 74HCT245
…continued
Conditions
Min
Typ
Max
Unit
Table 9:
GND = 0 V; test circuit see
Figure 7
.
Symbol
Parameter
T
amb
= 25
°
C
t
PHL
, t
PLH
propagation delay An to Bn or Bn
to An
Dynamic characteristics type 74HC245
Conditions
Min
Typ
Max
Unit
see
Figure 5
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 5.0 V; C
L
= 15 pF
V
CC
= 6.0 V
see
Figure 6
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
see
Figure 6
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
see
Figure 5
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
V
I
= GND to V
CC
-
-
-
-
25
9
7
7
90
18
-
15
ns
ns
ns
ns
t
PZH
, t
PZL
3-state output enable time OE to
An or OE to Bn
-
-
-
30
11
9
150
30
26
ns
ns
ns
t
PHZ
, t
PLZ
3-state output disable time OE to
An or OE to Bn
-
-
-
41
15
12
150
30
26
ns
ns
ns
t
THL
, t
TLH
output transition time
-
-
-
14
5
4
30
60
12
10
-
ns
ns
ns
pF
C
PD
power dissipation capacitance
per transceiver
T
amb
=
40
°
C to +85
°
C
t
PHL
, t
PLH
propagation delay An to Bn or Bn
to An
[1]
-
see
Figure 5
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
-
-
-
-
-
-
115
23
20
ns
ns
ns
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