參數(shù)資料
型號: VMEH22501A
廠商: Texas Instruments, Inc.
英文描述: 8-BIT UNIVERSAL BUS TRANSCEIVER AND TWO 1-BIT BUS TRANSCEIVERS WITH SPLIT LVTTL PORT, FEEDBACK PATH, AND 3-STATE OUTPUTS
中文描述: 8位通用總線收發(fā)器和兩個1位總線收發(fā)器與劈開LVTTL港口,反饋路徑,以及三態(tài)輸出
文件頁數(shù): 9/30頁
文件大小: 568K
代理商: VMEH22501A
SCES620 – DECEMBER 2004
9
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
timing requirements over recommended operating conditions for UBT transceiver (unless
otherwise noted) (see Figures 1 and 2)
MIN
MAX
UNIT
fclock
Clock frequency
120
MHz
tw
Pulse duration
LE high
2.5
ns
CLK high or low
3
3A before CLK
Data high
2.1
Data low
2.2
3A before LE
CLK high
2
tsu
Setup time
CLK low
2
ns
3B before CLK
Data high
2.5
Data low
2.7
3B before LE
CLK high
2
CLK low
2
3A after CLK
Data high
0
Data low
0
3A after LE
CLK high
1
th
Hold time
CLK low
1
ns
3B after CLK
Data high
0
Data low
0
3B after LE
CLK high
1
CLK low
1
switching characteristics over recommended operating conditions for bus transceiver function
(unless otherwise noted) (see Figures 1 and 2)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
MIN
TYP
MAX
UNIT
tPLH
tPHL
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tr
1A or 2A
1B or 2B
4.8
8.9
ns
4.5
7.8
1A or 2A
1Y or 2Y
6.2
14.5
ns
6.1
13
OEAB
1B or 2B
3.9
8.1
ns
3.7
3.3
7.4
9.7
OEAB
1B or 2B
ns
1.8
4.8
Transition time, B port (10%90%)
4.3
ns
tf
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Transition time, B port (90%10%)
4.3
ns
1B of 2B
1Y or 2Y
1.6
5.6
ns
1.6
5.6
OEBY
1Y or 2Y
1.2
5.6
ns
1.8
0.9
4.9
5.4
OEBY
1Y or 2Y
ns
1.4
4.5
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