74F256 View Datasheet(PDF) - Philips Electronics
Part Name
Description
Manufacturer
74F256 Datasheet PDF : 12 Pages
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Philips Semiconductors
Dual addressable latch
Product specification
74F256
AC WAVEFORMS
For all waveforms, VM = 1.5V.
The shaded areas indicate when the input is permitted to change for predictable output performance.
E
VM
tW(L)
VM
tPHL
tPLH
Qn
VM
VM
SF00809
Waveform 1. Propagation Delay,
Enable Input to Output, Enable Pulse Width
Dn
VM
tPHL
Qn
VM
VM
tPLH
VM
Waveform 2. Propagation Delay,
Data to Output
SF00810
An
VM
VM
tPHL
tPLH
Qn
VM
VM
SF00811
Waveform 3. Propagation Delay Address to Output
Dn
VM
VM
ts(H)
th(H)
E
VM
VM
VM
ts(L)
th(L)
VM
Qn
Q=D
Q=D
SF00813
Waveform 5. Data Setup and Hold Times
tW(L)
MR
VM
VM
tPHL
Qn
VM
SF00812
Waveform 4. Master Reset Pulse Width and
Master Reset to Output Delay
An
VM
Address Stable
VM
ts
th
E
VM
VM
SF00814
Waveform 6. Address Setup and Hold Times
1988 Nov 29
7
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