參數(shù)資料
型號: SN74ABT8646DWR
廠商: TEXAS INSTRUMENTS INC
元件分類: 總線收發(fā)器
英文描述: ABT SERIES, 8-BIT BOUNDARY SCAN REG TRANSCEIVER, TRUE OUTPUT, PDSO28
封裝: GREEN, PLASTIC, SOIC-28
文件頁數(shù): 18/32頁
文件大?。?/td> 529K
代理商: SN74ABT8646DWR
SN54ABT8646, SN74ABT8646
SCAN TEST DEVICES WITH
OCTAL BUS TRANSCEIVERS AND REGISTERS
SCBS123F AUGUST 1992 REVISED APRIL 2004
25
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (test mode) (see Figure 14)
SN54ABT8646
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 5 V,
TA = 25°C
MIN
MAX
UNIT
(INPUT)
(OUTPUT)
MIN
TYP
MAX
MIN
MAX
fmax
TCK
50
90
50
MHz
tPLH
TCK
A or B
3.5
8
9.5
3.5
13.4
ns
tPHL
TCK
A or B
3
7.7
10
3
12
ns
tPLH
TCK
TDO
2.5
4.3
5.5
2.5
7
ns
tPHL
TCK
TDO
2.5
4.2
5.5
2.5
7
ns
tPZH
TCK
A or B
4.5
8.2
9.7
4.5
12.5
ns
tPZL
TCK
A or B
4.5
9
11.2
4.5
13.5
ns
tPZH
TCK
TDO
2.5
4.3
5.5
2.5
7
ns
tPZL
TCK
TDO
2.5
4.9
6
2.5
7.5
ns
tPHZ
TCK
A or B
3.5
8.4
13
3.5
14.5
ns
tPLZ
TCK
A or B
3
8
10.5
3
13.5
ns
tPHZ
TCK
TDO
3
5.9
7
3
9
ns
tPLZ
TCK
TDO
3
5
6.5
3
8
ns
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (test mode) (see Figure 14)
SN74ABT8646
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 5 V,
TA = 25°C
MIN
MAX
UNIT
(INPUT)
(OUTPUT)
MIN
TYP
MAX
MIN
MAX
fmax
TCK
50
90
50
MHz
tPLH
TCK
A or B
3.5
8
9.5
3.5
12
ns
tPHL
TCK
A or B
3
7.7
9
3
11.5
ns
tPLH
TCK
TDO
2.5
4.3
5.5
2.5
6.5
ns
tPHL
TCK
TDO
2.5
4.2
5.5
2.5
6.5
ns
tPZH
TCK
A or B
4.5
8.2
9.5
4.5
12
ns
tPZL
TCK
A or B
4.5
9
10.5
4.5
13
ns
tPZH
TCK
TDO
2.5
4.3
5.5
2.5
6.5
ns
tPZL
TCK
TDO
2.5
4.9
6
2.5
7
ns
tPHZ
TCK
A or B
3.5
8.4
10.5
3.5
13.5
ns
tPLZ
TCK
A or B
3
8
10.5
3
13
ns
tPHZ
TCK
TDO
3
5.9
7
3
8.5
ns
tPLZ
TCK
TDO
3
5
6.5
3
7.5
ns
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