English
Language : 

CD74HC194 Datasheet, PDF (7/8 Pages) Texas Instruments – High-Speed CMOS Logic 4-Bit Bidirectional Universal Shift Register
◁
CD74HC194, CD74HCT194
Test Circuits and Waveforms
INPUT LEVEL
CP
10%
Q
tr
90%
VS
tW
tf
VS
10%
tPHL
VS
tTHL
VS
GND
tPLH
90%
VS
10%
tTLH
FIGURE 1. CLOCK PRE-REQUISITE TIMES AND
PROPAGATION AND OUTPUT TRANSITION TIMES
MR
VS
VS
tW
tREM
VS
CP
tPHL
Q
VS
INPUT LEVEL
GND
INPUT LEVEL
GND
FIGURE 2. MASTER RESET PRE-REQUISITE TIMES AND
PROPAGATION DELAYS
VALID
DATA
CP
VS
tSU
tH
VS
INPUT LEVEL
GND
INPUT LEVEL
GND
FIGURE 3. DATA PRE-REQUISITE TIMES
S OR DS
CP
VALID
VS
tSU
tH
VS
INPUT LEVEL
GND
INPUT LEVEL
GND
FIGURE 4. PARALLEL LOAD OR SHIFT-LEFT/SHIFT-RIGHT
PRE-REQUISITE TIMES
7
 ▷