CD74HC4094 Datasheet, PDF (8/8 Pages) Texas Instruments – High Speed CMOS Logic 8-Stage Shift and Store Bus Register, Three-State

CD74HC4094, CD74HCT4094
Test Circuits and Waveforms
6ns
CLOCK
t_SU
t_H
6ns
90%
V_S
10%
t_W
V_S
t_W
INPUT LEVEL
GND
INPUT LEVEL
SERIAL IN
Q_n, QS₁
t_PLH
QS₂
V_S
t_PLH
V_S
t_PHL
GND
V_OH
V_OL
t_PHL
V_OH
V_OL
FIGURE 1. DATA PROPAGATION DELAYS, SET-UP AND HOLD TIMES
SERIAL IN
CLOCK
STROBE
Q_n
INPUT LEVEL
t_SU
t_H
V_S
t_W
V_S
t_PLH, t_PHL
V_S
GND
INPUT LEVEL
V_S
GND
V_OH
V_OL
V_OH
V_OL
FIGURE 2. STROBE PROPAGATION DELAYS AND SET-UP
AND HOLD TIMES
t_r = 6ns
OE
t_PLZ
OUTPUT
LOW TO OFF
t_PHZ
OUTPUT
HIGH TO OFF
OUTPUTS
CONNECTED
t_f = 6ns
90%
V_S
10%
t_PZL
10%
90%
V_S
t_PZH
V_S
OUTPUTS
DISCONNECTED
OUTPUTS
CONNECTED
FIGURE 3. ENABLE AND DISABLE TIMES
8