參數(shù)資料
型號(hào): SN74ABT8646DWRE4
廠商: Texas Instruments, Inc.
英文描述: SCAN TEST DEVICES WITH OCTAL BUS TRANSCEIVERS AND RESISTERS
中文描述: 掃描測(cè)試設(shè)備與八路總線收發(fā)器和電阻
文件頁數(shù): 23/32頁
文件大小: 532K
代理商: SN74ABT8646DWRE4
SCBS123F AUGUST 1992 REVISED APRIL 2004
23
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
timing requirements over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (normal mode) (see Figure 14)
SN54ABT8646
MIN
SN74ABT8646
MIN
UNIT
MAX
MAX
fclock
tw
tsu
th
Clock frequency
CLKAB or CLKBA
0
100
0
100
MHz
Pulse duration
CLKAB or CLKBA high or low
A before CLKAB
or B before CLKBA
A after CLKAB
or B after CLKBA
3
3
ns
Setup time
4.7
4.5
ns
Hold time
0
0
ns
timing requirements over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (test mode) (see Figure 14)
SN54ABT8646
SN74ABT8646
UNIT
MIN
MAX
MIN
MAX
fclock
tw
Clock frequency
TCK
0
50
0
50
MHz
Pulse duration
TCK high or low
A, B, CLK, DIR, OE, or S before TCK
TDI before TCK
TMS before TCK
A, B, CLK, DIR, OE, or S after TCK
TDI after TCK
TMS after TCK
Power up to TCK
VCC power up
5
5
ns
7
5
tsu
Setup time
6
6
ns
6
6
0
0
th
Hold time
0
0
ns
0
0
td
tr
Delay time
50*
50
ns
μ
s
Rise time
1*
1
* On products compliant to MIL-PRF-38535, this parameter is not production tested.
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