74abt16652dl NXP Semiconductors, 74abt16652dl Datasheet - Page 4

• Manufacturer Part Number: 74abt16652dl
• Description: 74abt16652 16-bit Transceiver/register, Non-inverting 3-state
• Manufacturer: NXP Semiconductors

**
Philips Semiconductors
LOGIC DIAGRAM
FUNCTION TABLE
H = HIGH voltage level
L = LOW voltage level
X = Don’t care
*
2002 Apr 03
nOEAB
16-bit transceiver/register, non-inverting (3-State)
= Low-to-High clock transition
H
H
H
H
L
L
X
L
L
L
L
The data output function may be enabled or disabled by various signals at the nOEBA and nOEAB inputs. 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.
If both Select controls (nSAB and nSBA) are LOW, then clocks can occur simultaneously. If either Select control is HIGH, the clocks must
be staggered in order to load both registers.
nOEBA
H
H
H
H
X
H
H
L
L
L
L
nOEBA
nOEAB
nCPBA
nCPAB
nSBA
nSAB
nA0
nA1
nA2
nA3
nA4
nA5
nA6
nA7
nCPAB
H or L
H or L
H or L
H or L
X
X
X
INPUTS
nCPBA
H or L
H or L
H or L
H or L
X
X
X
1of 8 Channels
nSAB
**
H
H
X
X
X
X
X
X
X
L
1D
C1
nSBA
Q
**
X
X
X
X
X
H
X
X
H
L
DETAIL A X 7
Unspecified
4
output*
Output
Output
Input
Input
Input
nAx
DATA I/O
Unspecified
Q
output*
Output
Output
Input
Input
Input
nBx
C1
1D
Real time B data to A bus
Real time A data to B bus
Store A in both registers
Store B in both registers
Stored B data to A bus
Stored A data to B bus
Stored B data to A bus
Store A data to B bus
OPERATING MODE
Store A and B data
Store A, Hold B
Hold A, Store B
SH00065
Isolation
74ABT16652
nB0
nB1
nB2
nB3
nB4
nB5
nB6
nB7
Product data