Functional Description
Truth Tables
The ABT16374 consists of sixteen edge-triggered flip-flops
with individual D-type inputs and TRI-STATE true outputs.
The device is byte controlled with each byte functioning
identically, but independent of the other. The control pins can
be shorted together to obtain full 16-bit operation. Each byte
has a buffered clock and buffered Output Enable common to
all flip-flops within that byte. The description which follows
applies to each byte. Each flip-flop will store the state of their
individual D inputs that meet the setup and hold time require-
ments on the LOW-to-HIGH Clock (CPn) transition. With the
Output Enable (OEn) LOW, the contents of the flip-flops are
available at the outputs. When OEn is HIGH, the outputs go
to the high impedance state. Operation of the OEn input
does not affect the state of the flip-flops.
Inputs
Outputs
CP1
N
OE1
L
D0–D7
O0–O7
H
L
H
N
L
L
(Previous)
Z
L
L
X
X
X
H
Inputs
Outputs
CP2
N
OE2
L
D8–D15
O8–O15
H
L
H
N
L
L
(Previous)
Z
L
L
X
X
X
H
H = High Voltage Level
L = Low Voltage Level
X = Immaterial
Z = High Impedance
Logic Diagrams
Byte 1 (0:7)
DS100224-3
Byte 2 (8:15)
DS100224-4
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