SN74ACT7806_06 Datasheet, PDF (8/12 Pages) Texas Instruments – 256 × 18 STROBED FIRST-IN, FIRST-OUT MEMORY

SN74ACT7806
256 × 18
STROBED FIRST-IN, FIRST-OUT MEMORY
SCAS438C – APRIL 1992 – REVISED APRIL 1998
PARAMETER MEASUREMENT INFORMATION
7V
From Output
Under Test
CL = 50 pF
(see Note A)
S1
500 Ω
Test
Point
500 Ω
PARAMETER
ten
tPZH
tPZL
tdis
tPHZ
tPLZ
tpd
tPLH
tPHL
S1
Open
Closed
Open
Closed
Open
Open
Timing
Input
Data
Input
LOAD CIRCUIT
3V
1.5 V
0V
tsu
th
1.5 V
3V
1.5 V
0V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
tw
Input 1.5 V
VOLTAGE WAVEFORMS
PULSE DURATION
3V
1.5 V
0V
Output
Control
1.5 V
3V
1.5 V
0V
tPZL
tPLZ
Input
tPLH
Output
1.5 V
3V
1.5 V
0V
tPHL
1.5 V
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
1.5 V
VOH
VOL
Output
Waveform 1
S1 at 7 V
tPZH
Output
Waveform 2
S1 at Open
1.5 V
tPHZ
1.5 V
≈ 3.5 V
VOL + 0.3 V
VOL
VOH
VOH – 0.3 V
≈0 V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
NOTE A: CL includes probe and jig capacitance.
Figure 3. Load Circuit and Voltage Waveforms
8
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