Philips MC-D370/21M - Page 51

3-PHASE MOTOR DRIVER IC
W49FP(BA6849)
9-5 9-5
OCTAL D-TYPE FLIP-FLOP; POSITIVE EDGE-TRIGGER; 3-STATE
74HC/HCT374
Functional diagram.
FUNCTION TABLE
Notes
1. H = HIGH voltage level
h=HIGH voltage level one set-up time prior to the LOW-to-HIGH
CP transition
L=LOW voltage level
I=LOW voltage level one set-up time prior to the LOW-to-HIGH CP
transition
Z=high impedance OFF-state
↑= LOW-to-HIGH CP transition
OPERATING
MODES
INPUTS
INTERNAL
FLIP-FLOPS
OUTPUTS
OE CP D
n
Q
0
to Q
7
load and read
register
L
L
↑
↑
l
h
L
H
L
H
load register and
disable outputs
H
H
↑
↑
l
h
L
H
Z
Z
Logic diagram.
Pin descriptions