BU4538B Datasheet, PDF (4/5 Pages) Rohm – Dual precision monostable multivibrator

Standard ICs
•^{Timing chart}
A
B
CD
Q
Q
BU4538B
•^{Measurement circuits}
tW
tW
t1
t2
t3
tW
t1, t2, t3 < tW
VDD
RX
CX
VDD T2 T1
A
Q
B
Q
CD
P. G. P. G. P. G.
CL
CL
VSS
Fig. 1 (a) Switching time
A
B
50%
CD
tPLH
tWOUT
50%
Q
tPHL
Q
50%
50%
tPLH tTHL
20ns
90%
10%
20ns
90%
50%
10%
tTLH
tPHL
90%
50% 50%
10%
tPHL tTLH
90%
10%
tTHL
50%
tPHL
50%
tWOUT
90%
50%
10%
50%
20ns
90%
10%
20ns
20ns
20ns
50%
trr
Fig. 1 (b) Switching time measurement waveforms
4