VT16646ADL 데이터 시트보기 (PDF) - Philips Electronics
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VT16646ADL Datasheet PDF : 12 Pages
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Philips Semiconductors
3.3V 16-bit bus transceiver (3-State)
LOGIC DIAGRAM
nOE
nDIR
nCPBA
nSBA
nCPAB
nSAB
1 of 16 Channels
nA0
1D
C1
Q
1D
C1
Q
Product specification
74LVT16646A
nB0
nA1
nB1
nA2
nB2
nA3
nB3
nA4
DETAIL A X 7
nB4
nA5
nB5
nA6
nB6
nA7
nB7
SH00029
FUNCTION TABLE
INPUTS
nOE
nDIR nCPAB nCPBA
nSAB nSBA
DATA I/O
nAx
nBx
OPERATING MODE
X
X
↑
X
X
X
Input
Unspecified
output*
Store A, B unspecified
X
X
X
↑
X
X
Unspecified
output*
Input
Store B, A unspecified
H
H
X
↑
↑
X
X
X
H or L H or L
X
X
Input
Input
Store A and B data
Isolation, hold storage
L
L
L
L
X
X
X
X
L
H or L
X
H
Output
Input
Real time B data to A bus
Stored B data to A bus
L
L
H
X
X
H
H or L
X
L
X
H
X
Input
Output
Real time A data to B bus
Stored A data to B bus
H = High voltage level
L = Low voltage level
X = Don’t care
↑ = Low-to-High clock transition
*
The data output function may be enabled or disabled by various signals at the nOE input. Data input functions are always enabled, i.e.,
data at the bus pins will be stored on every Low-to-High transition of the clock.
1998 Feb 19
5
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