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參數(shù)資料
| 型號(hào)： | 74HCT243 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Quad bus transceiver; 3-state |
| 中文描述： | 四總線收發(fā)器，三態(tài) |
| 文件頁數(shù)： | 6/8頁 |
| 文件大小： | 49K |
| 代理商： | 74HCT243 |
December 1990
6
Philips Semiconductors
Product specification
Quad bus transceiver; 3-state
74HC/HCT243
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”
.
Output capability: bus driver
I
CC
category: MSI
Note to HCT types
The value of additional quiescent supply current (
I
CC
) for a unit load of 1 is given in the family specifications.
To determine
I
CC
per input, multiply this value by the unit load coefficient shown in the table below.
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t
r
= t
f
= 6 ns; C
L
= 50 pF
INPUT
UNIT LOAD COEFFICIENT
A
n
B
n
OE
A
OE
B
1.10
1.10
1.00
1.00
SYMBOL PARAMETER
T
amb
(
°
C)
UNIT
TEST CONDITIONS
74HCT
V
CC
(V)
WAVEFORMS
+
25
40 to
+
85
40 to
+
125
min.
typ.
max.
min.
max.
min.
max.
t
PHL
/ t
PLH
propagation delay
A
n
to B
n
;
B
n
to A
n
3-state output enable time
OE
A
to A
n
or B
n;
OE
B
to A
n
or B
n
3-state output disable time
OE
A
to A
n
or B
n;
OE
B
to A
n
or B
n
output transition time
13
22
28
33
ns
4.5
Fig.5
t
PZH
/ t
PZL
18
34
43
51
ns
4.5
Figs 6 and 7
t
PHZ
/ t
PLZ
23
35
44
53
ns
4.5
Figs 6 and 7
t
THL
/ t
TLH
5
12
15
18
ns
4.5
Fig.5
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74HC244 | Octal buffer/line driver; 3-state |
| 74HCT244 | Octal buffer/line driver; 3-state |
| 74HC251 | 8-input multiplexer; 3-state |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74HCT243D | 制造商:NXP Semiconductors 功能描述: 制造商:PHILIP 功能描述: |
| 74HCT243DB,118 | 制造商:NXP Semiconductors 功能描述: |
| 74HCT243P | 制造商:NXP Semiconductors 功能描述: |
| 74HCT244 | 制造商:NTE Electronics 功能描述: |
| 74HCT244AD | 制造商:Motorola Inc 功能描述:BUFFER/DRIVER OCTAL NONINVERTING WITH 3-STATE OUTPUTS TTL-COMPATIBLE INPUTS |
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