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參數(shù)資料
| 型號(hào)： | SN54AC245W |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS |
| 中文描述： | 八路總線收發(fā)器與三態(tài)輸出 |
| 文件頁(yè)數(shù)： | 4/6頁(yè) |
| 文件大?。?/td> | 100K |
| 代理商： | SN54AC245W |
SN54AC245, SN74AC245
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCAS461D – FEBRUARY 1995 – REVISED DECEMBER 1996
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
TA = 25
°
C
TYP
SN54AC245
MIN
2.9
SN74AC245
MIN
2.9
UNIT
MIN
2.9
MAX
MAX
MAX
3 V
IOH = –50 A
4.5 V
4.4
4.4
4.4
5.5 V
5.4
5.4
5.4
VOH
IOH = –12 mA
3 V
2.56
2.4
2.46
V
IOH= 24 mA
IOH = –24 mA
4.5 V
3.86
3.7
3.76
5.5 V
4.86
4.7
4.76
IOH = –50 mA
IOH = –75 mA
5.5 V
3.85
5.5 V
3.85
3 V
0.002
0.1
0.1
0.1
IOL = 50 A
4.5 V
0.001
0.1
0.1
0.1
5.5 V
0.001
0.1
0.1
0.1
VOL
IOL = 12 mA
3 V
0.36
0.5
0.44
V
IOL= 24 mA
IOL = 24 mA
4.5 V
0.36
0.5
0.44
5.5 V
0.36
0.5
0.44
IOL = 50 mA
IOL = 75 mA
5.5 V
1.65
5.5 V
1.65
±
1
±
1
II
A or B ports
VI= VCCor GND
VI = VCC or GND
5 5 V
5.5 V
±
0.1
±
0.1
±
1
±
1
A
OE or DIR
IOZ
VO = VCC or GND,
VI(OE) = VIL or VIH
VI = VCC or GND, IO = 0
VI = VCC or GND
VO = VCC or GND
5.5 V
±
0.5
±
10
±
5
A
ICC
Ci
Cio
Not more than one output should be tested at a time, and the duration of the test should not exceed 2 ms.
For I/O ports, the parameter IOZ includes the input leakage current.
5.5 V
4
80
40
A
5 V
4.5
pF
5 V
15
pF
switching characteristics over recommended operating free-air temperature range,
V
CC
= 3.3 V
0.3 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
TA = 25
°
C
TYP
SN54AC245
MIN
1
SN74AC245
MIN
1
UNIT
(OUTPUT)
MIN
1.5
MAX
8.5
MAX
11.5
MAX
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
A or B
B or A
5
9
ns
1.5
5
8.5
1
10
1
9
OE
A or B
2.5
7
11.5
1
13.5
2
12.5
ns
2.5
7.5
12
1
14.5
2
13.5
OE
A or B
2
6.5
12
1
13.5
1
12.5
ns
2
7
11.5
1
14
1.5
13
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