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| 型號： | SN74LVT8980FK |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | EMBEDDED TEST-BUS CONTROLLERS IEEE STD 1149.1 JTAG TAP MASTERS WITH 8-BIT GENERIC HOST INTERFACES |
| 中文描述： | 嵌入式測試總線控制器IEEE標準1149.1 JTAG接口，8咨詢大師比特通用主機接口 |
| 文件頁數(shù)： | 29/34頁 |
| 文件大小： | 495K |
| 代理商： | SN74LVT8980FK |
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SN54LVT8980, SN74LVT8980
EMBEDDED TEST-BUS CONTROLLERS
IEEE STD 1149.1 (JTAG) TAP MASTERS WITH 8-BIT GENERIC HOST INTERFACES
SCBS676C – DECEMBER 1996 – REVISED AUGUST 1997
29
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
switching characteristics over recommended operating free-air temperature range (unless
otherwise noted) (see Figures 9 and 10)
SN54LVT8980
VCC = 3.3 V
±
0.3 V
SN74LVT8980
VCC = 3.3 V
±
0.3 V
TYP
6
10
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 2.7 V
VCC = 2.7 V
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
CLKIN
TCK
6
20
25
17
20
ns
6
20
25
6
10
17
20
CLKIN
TDO TMS
TDO, TMS
8
35
40
8
18
30
35
ns
8
35
40
8
18
30
35
RST
↓
D
3
35
40
3
17
30
35
ns
3
35
40
3
17
30
35
RST
↓
RDY
3
35
40
3
17
30
35
ns
3
35
40
3
17
30
35
tPLH
RST
↓
TDO, TMS,
TRST
5
30
35
5
15
25
30
ns
tPHL
tPLH
tPHL
TCK
5
30
35
5
15
25
30
STRB
↑
STRB
↓
RDY
3
22
28
3
10
18
22
ns
3
22
28
3
10
18
22
tPLH
STRB
↑
TCK, TDO,
TMS TRST
TMS, TRST
discrete mode
3
28
35
3
14
22
28
ns
tPHL
3
28
35
3
14
22
28
tPLH
STRB
↑
TCK, TDO,
TMS TRST
TMS, TRST
other modes
6
40
45
6
20
35
40
ns
tPHL
6
40
45
6
20
35
40
tPZH
tPZL
tPZH
tPZL
tPZH
tPZL
tPHZ
tPLZ
tPHZ
tPLZ
tPHZ
tPLZ
STRB
↓
D
3
20
25
3
8
15
18
ns
3
20
25
3
8
15
18
STRB
↑
TCK, TDO,
TMS, TRST
5
30
35
5
15
25
30
ns
5
30
35
5
15
25
30
TOE
↓
TCK, TDO,
TMS, TRST
2
15
18
2
6
12
15
ns
2
15
18
2
6
12
15
STRB
↑
D
3
3
20
20
25
25
3
3
8
8
15
15
18
18
ns
STRB
↑
TCK, TDO,
TMS, TRST
5
5
30
30
35
35
5
5
15
15
25
25
30
30
ns
TOE
↑
TCK, TDO,
TMS, TRST
2
2
15
15
18
18
2
2
6
6
12
12
15
15
ns
All typical values are at VCC = 3.3 V, TA = 25
°
C.
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
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