參數(shù)資料
型號(hào)： SN54BCT8240AJT
廠商： Texas Instruments, Inc.
英文描述： SCAN TEST DEVICES WITH OCTAL INVERTING BUFFERS
中文描述： 掃描測(cè)試設(shè)備與八進(jìn)制反向緩沖器
文件頁數(shù)： 19/26頁
文件大?。?/td> 473K
代理商： SN54BCT8240AJT
SN54BCT8240A, SN74BCT8240A
SCAN TEST DEVICES
WITH OCTAL INVERTING BUFFERS
SCBS067E – FEBRUARY 1990 – REVISED DECEMBER 1996
19
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (normal mode) (see Figure 9)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 5 V,
TA = 25
°
C
MIN
2.5
SN54BCT8240A
SN74BCT8240A
UNIT
TYP
5.7
MAX
7.5
MIN
2.5
MAX
MIN
2.5
MAX
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
A
Y
10
9
ns
2.5
5.2
7
2.5
9
2.5
8
OE
Y
3
6
8
3
10
3
9.5
ns
3.5
7
9
3.5
12
3.5
11
OE
Y
2.5
2.5
6
8
8
2.5
2.5
10
10
2.5
2.5
9
9
ns
5.5
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (test mode) (see Figure 9)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 5 V,
TA = 25
°
C
MIN
SN54BCT8240A
SN74BCT8240A
UNIT
TYP
MAX
MIN
MAX
MIN
MAX
fmax
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPZH
tPZL
tPZH
tPZL
tPZH
tPZL
tPHZ
tPLZ
tPHZ
tPLZ
tPHZ
tPLZ
TCK
20
20
20
MHz
TCK
↓
Y
6
13
15.5
6
21.5
6
20
ns
6
12.5
15.5
6
21.5
6
20
TCK
↓
TDO
3.5
7.6
10.5
3.5
14
3.5
13
ns
3.5
8
10.5
3.5
13
3.5
12
TCK
↑
Y
7.5
16.5
20
7.5
28
7.5
24
ns
7.5
17
21
7.5
29
7.5
25
TCK
↓
Y
6.5
14
17
6.5
24
6.5
21
ns
7
15
20
7
26
7
23
TCK
↓
TDO
3.5
7.6
10.5
3.5
11.5
3.5
11
ns
4
8.5
11
4
13.5
4
12.5
TCK
↑
Y
8
18
22
8
30
8
27
ns
8
19
25
8
32
8
29
TCK
↓
Y
6
14
18
6
24
6
22
ns
6
14
17
6
23
6
21
TCK
↓
TDO
3
8
11.5
3
13
3
12.5
ns
3
7.5
10
3
13
3
12
TCK
↑
Y
8
8
18.5
18.5
22
22
8
8
31
31
8
8
27
27
ns
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