參數(shù)資料
型號(hào): SN74ABT18502A
廠商: Texas Instruments, Inc.
英文描述: Scan Test Devices With 18-Bit Universal Bus Transceivers(掃描測(cè)試裝置(帶18位通用總線收發(fā)器))
中文描述: 掃描測(cè)試設(shè)備與18位通用總線收發(fā)器(掃描測(cè)試裝置(帶18位通用總線收發(fā)器))
文件頁數(shù): 28/35頁
文件大?。?/td> 738K
代理商: SN74ABT18502A
SN54ABT18502A, SN54ABT182502A, SN74ABT18502A, SN74ABT182502A
SCAN TEST DEVICES WITH
18-BIT UNIVERSAL BUS TRANSCEIVERS
SCBS488 – AUGUST 1994
28
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)
12
SN54ABT18502A
MIN
SN74ABT18502A
MIN
UNIT
MAX
MAX
fclock
Clock frequency
CLKAB or CLKBA
0
100
0
100
MHz
tw
Pulse duration
CLKAB or CLKBA high or low
3.5
3.5
ns
LEAB or LEBA high
A before CLKAB
or B before CLKBA
3.5
3.5
Setup time
3.5
3.5
tsu
A before LEAB
or B before LEBA
CLK high
3.5
3.5
ns
CLK low
2
2
th
Hold time
A after CLKAB
or B after CLKBA
A after LEAB
or B after LEBA
0.5
0.5
ns
3
3
timing requirements over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (test mode) (see Figure 14)
SN54ABT18502A
MIN
SN74ABT18502A
MIN
UNIT
MAX
MAX
fclock
tw
Clock frequency
TCK
0
50
0
50
MHz
Pulse duration
TCK high or low
A, B, CLK, LE, or OE before TCK
TDI before TCK
TMS before TCK
A, B, CLK, LE, or OE after TCK
TDI after TCK
TMS after TCK
Power up to TCK
VCC power up
8
8
ns
Setup time
6
6
tsu
4.5
4.5
ns
3
3
H ld i
Hold time
1.5
1.5
th
1
1
ns
1.5
1.5
td
tr
Delay time
50
50
ns
μ
s
Rise time
1
1
P
相關(guān)PDF資料
PDF描述
SN54ABT182502A Scan Test Devices With 18-Bit Universal Bus Transceivers(掃描測(cè)試裝置(帶18位通用總線收發(fā)器))
SN54ABT18502A Scan Test Devices With 18-Bit Universal Bus Transceivers(掃描測(cè)試裝置(帶18位通用總線收發(fā)器))
SN74AHC16245 16-Bit Bus Transceivers With 3-State Outputs(16位緩沖器/驅(qū)動(dòng)器(三態(tài)輸出))
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SN74AHCT27 Triple 3-Input Positive-NOR Gates(三3輸入正或非門)
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