參數(shù)資料
型號: SN74LVTH646DGVRE4
廠商: TEXAS INSTRUMENTS INC
元件分類: 總線收發(fā)器
英文描述: LVT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24
封裝: GREEN, PLASTIC, TVSOP-24
文件頁數(shù): 19/21頁
文件大?。?/td> 579K
代理商: SN74LVTH646DGVRE4
SN54LVTH646, SN74LVTH646
3.3V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS
WITH 3STATE OUTPUTS
SCBS705H AUGUST 1997 REVISED MAY 2004
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
timing requirements over recommended operating free-air temperature range (unless otherwise
noted) (see Figure 2)
SN54LVTH646
SN74LVTH646
VCC = 3.3 V
± 0.3 V
VCC = 2.7 V
VCC = 3.3 V
± 0.3 V
VCC = 2.7 V
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
fclock
Clock frequency
150
MHz
tw
Pulse duration, CLK high or low
3.3
ns
tsu
Setup time,
Data high
1.3
1.6
1.2
1.5
ns
tsu
Setup time,
A or B before CLKAB
↑ or CLKBA↑
Data low
1.9
2.6
1.6
2.2
ns
th
Hold time, A or B after CLKAB
↑ or CLKBA↑
1.2
0.8
ns
switching characteristics over recommended operating free-air temperature range, CL = 50 pF
(unless otherwise noted) (see Figure 2)
SN54LVTH646
SN74LVTH646
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 3.3 V
± 0.3 V
VCC = 2.7 V
VCC = 3.3 V
± 0.3 V
VCC = 2.7 V
UNIT
(INPUT)
(OUTPUT)
MIN
MAX
MIN
MAX
MIN
TYP
MAX
MIN
MAX
fmax
150
MHz
tPLH
CLKBA or
A or B
1
5.3
5.9
1.8
3.1
4.7
5.6
ns
tPHL
CLKBA or
CLKAB
A or B
1.5
5
5.9
1.8
3.1
4.7
5.6
ns
tPLH
A or B
B or A
1
4.9
5.6
1.3
2.3
3.5
4.1
ns
tPHL
A or B
B or A
1.2
4.8
5
1.3
2.4
3.5
4.1
ns
tPLH
SBA or SAB
A or B
1
5.3
6.3
1.5
3
4.9
6
ns
tPHL
SBA or SAB
A or B
1.3
5.3
6.3
1.5
3.3
4.9
6
ns
tPZH
OE
A or B
1
5.4
6.7
1.1
3.1
5.2
6.5
ns
tPZL
OE
A or B
1
5.6
6.7
1.1
3.4
5.2
6.5
ns
tPHZ
OE
A or B
1.7
6.3
6.5
2.3
3.9
5.5
6.1
ns
tPLZ
OE
A or B
2.2
6.3
6.5
2.3
4
5.5
5.9
ns
tPZH
DIR
A or B
1.2
5.6
6.8
1.3
3.4
5.2
6.6
ns
tPZL
DIR
A or B
1.2
6.7
6.8
1.3
3.6
5.2
6.6
ns
tPHZ
DIR
A or B
1.1
7.2
8.1
1.5
3.2
5.6
6.7
ns
tPLZ
DIR
A or B
1.4
6.1
6.6
1.5
3.8
5.6
6.3
ns
All typical values are at VCC = 3.3 V, TA = 25°C.
These parameters are measured with the internal output state of the storage register opposite that of the bus input.
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