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參數(shù)資料
| 型號： | 7LVC646APWDH |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 通用總線功能 |
| 英文描述： | Octal bus transceiver/register 3-State |
| 中文描述： | LVC/LCX/Z SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24 |
| 文件頁數(shù)： | 3/16頁 |
| 文件大小： | 138K |
| 代理商： | 7LVC646APWDH |
Philips Semiconductors
Product specification
74LVC646A
Octal bus transceiver/register (3-State)
1998 Jul 29
3
PIN CONFIGURATION
SV00766
1
2
3
4
5
6
7
8
9
10
11
12
CPAB
SAB
DIR
A0
A1
A2
A3
A4
A5
A6
A7
GND
VCC
CPBA
SBA
OE
B0
B1
B2
B3
B4
B5
B6
B7
24
23
22
21
20
19
18
17
16
15
14
13
PIN DESCRIPTION
PIN NUMBER
SYMBOL
FUNCTION
1
CP
AB
‘A’ to ‘B’ clock input
(LOW-to-HIGH, edge-triggered)
2
S
AB
DIR
Select ‘A’ to ‘B’ source input
3
Direction control input
4, 5, 6, 7, 8,
9, 10, 11
A
0
to A
7
‘A’ data inputs/outputs
12
GND
Ground (0V)
20, 19, 18, 17,
16, 15, 14, 13
B
0
to B
7
‘B’ data inputs/outputs
21
OE
Output enable input (active LOW)
22
S
BA
Select ‘B’ to ‘A’ source input
23
CP
BA
‘B’ to ‘A’ clock input
(LOW-to-HIGH, edge-triggered)
24
V
CC
Positive supply voltage
FUNCTION TABLE
INPUTS
DATA I/O *
FUNCTION
OE
DIR
CP
AB
↑
X
CP
BA
X
↑
↑
H or L
S
AB
X
X
S
BA
X
X
A
0
to A
7
input
un *
B
0
to B
7
un *
input
X
X
X
X
store A, B unspecified *
store B, A unspecified *
H
H
X
X
↑
H or L
X
X
X
X
input
input
store A and B data,
isolation hold storage
L
L
L
L
X
X
X
H or L
X
X
L
H
output
input
real-time B data to A bus
stored B data to A bus
L
L
H
H
X
H or L
X
X
L
H
X
X
input
output
real-time A data to B bus
stored A data to B bus
*
The data output functions may be enabled or disabled by
various signals at the OE and DIR inputs. Data input
functions are always enabled, i.e., data at the bus inputs will
be stored on every LOW-to-HIGH transition on the clock
inputs.
un
= unspecified
H
= HIGH voltage level
L
= LOW voltage level
X
= Don’t care
↑
= LOW-to-HIGH level transition
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| 7LVT2241PWDH | 3.3V Octal buffer/line driver with 30ohm series termination resistors; 3-State |
| 7LVT2244PWDH | 3.3V Octal buffer/line driver with 30ohm series termination resistors 3-State |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 7LVC827APWDH | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:10-bit buffer/line driver with 5-volt tolerant inputs/outputs 3-State |
| 7LVC841APWDH | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:10-bit transparent latch with 5-volt tolerant inputs/outputs 3-State |
| 7LVT2241PWDH | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:3.3V Octal buffer/line driver with 30ohm series termination resistors; 3-State |
| 7LVT2244PWDH | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:3.3V Octal buffer/line driver with 30ohm series termination resistors 3-State |
| 7LVT2245PWDH | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:3.3V Octal transceiver with 30ohm termination resistors 3-State |
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