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| 型號(hào)： | 74HC_HCT245_3 |
| 廠(chǎng)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(xiàn)收發(fā)器, 3態(tài) |
| 文件頁(yè)數(shù)： | 11/22頁(yè) |
| 文件大?。?/td> | 130K |
| 代理商： | 74HC_HCT245_3 |
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9397 750 14502
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 03 — 31 January 2005
11 of 22
Philips Semiconductors
74HC245; 74HCT245
Octal bus tranceiver; 3-state
[1]
C
PD
is used to determine the dynamic power dissipation (P
D
in
μ
W):
P
D
= C
PD
×
V
CC2
×
f
i
×
N +
∑
(C
L
×
V
CC2
×
f
o
) where:
f
i
= input frequency in MHz;
f
o
= output frequency in MHz;
C
L
= output load capacitance in pF;
V
CC
= supply voltage in V;
N = number of inputs switching;
∑
(C
L
×
V
CC2
×
f
o
) = sum of outputs.
t
PZH
, t
PZL
3-state output enable time OE to
An or OE to Bn
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
-
-
-
-
-
-
190
38
33
ns
ns
ns
t
PHZ
, t
PLZ
3-state output disable time OE to
An or OE to Bn
-
-
-
-
-
-
190
38
33
ns
ns
ns
t
THL
, t
TLH
output transition time
-
-
-
-
-
-
75
15
13
ns
ns
ns
T
amb
=
40
°
C to +125
°
C
t
PHL
, t
PLH
propagation delay An to Bn or Bn
to An
see
Figure 5
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 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
-
-
-
-
-
-
135
27
23
ns
ns
ns
t
PZH
, t
PZL
3-state output enable time OE to
An or OE to Bn
-
-
-
-
-
-
225
45
38
ns
ns
ns
t
PHZ
, t
PLZ
3-state output disable time OE to
An or OE to Bn
-
-
-
-
-
-
225
45
38
ns
ns
ns
t
THL
, t
TLH
output transition time
-
-
-
-
-
-
90
18
15
ns
ns
ns
Table 9:
GND = 0 V; test circuit see
Figure 7
.
Symbol
Parameter
Dynamic characteristics type 74HC245
…continued
Conditions
Min
Typ
Max
Unit
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| 74HC-HCT7541 | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:OCTAL SCHMITT TRIGGER BUFFER/LINE DRIVER;3-STATE |
| 74HCT00 | 制造商:HAR 功能描述:74HCT00 制造商:NTE Electronics 功能描述: |
| 74HCT00AN | 制造商:AVX Corporation 功能描述: |
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| 74HCT00BQ,115 | 功能描述:邏輯門(mén) QUAD 2-INPUT NAND RoHS:否 制造商:Texas Instruments 產(chǎn)品:OR 邏輯系列:LVC 柵極數(shù)量:2 線(xiàn)路數(shù)量（輸入/輸出）:2 / 1 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 傳播延遲時(shí)間:3.8 ns 電源電壓-最大:5.5 V 電源電壓-最小:1.65 V 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DCU-8 封裝:Reel |
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