74LV259D Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
componentes Descripción
Fabricante
74LV259D Datasheet PDF : 14 Pages
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Philips Semiconductors
8-bit addressable latch
Product specification
74LV259
AC CHARACTERISTICS (Continued)
GND = 0V; tr = tf ≤ 2.5ns; CL = 50pF; RL = 1KΩ
SYMBOL
PARAMETER
WAVEFORM
CONDITION
VCC(V)
1.2
th
Hold time
An to LE
2.0
Figure 6
2.7
3.0 to 3.6
NOTES:
1. Unless otherwise stated, all typical values are measured at Tamb = 25°C
2. Typical values are measured at VCC = 3.3 V.
–40 to +85 °C
MIN TYP1 MAX
–20
5
–7
5
–5
5
–42
–40 to +125 °C
MIN MAX
5
5
5
UNIT
ns
AC WAVEFORMS
VM = 1.5 V at VCC ≥ 2.7 V and ≤ 3.6V;
VM = 0.5 × VCC at VCC < 2.7 V and ≥ 4.5 V.
VOL and VOH are the typical output voltage drop that occur with the
output load.
VCC
An INPUT
VM
VCC
Dn INPUT
GND
VCC
LE INPUT
GND
VOH
Qn OUTPUT
VOL
VM
tW
tPHL
VM
tPLH
SV01605
Figure 1. Enable input (LE) to output (Qn) propagation delays
and the enable input pulse width.
GND
VOH
tPHL
tPLH
Qn OUTPUT
VM
VOL
SV01607
Figure 3. Address inputs (An) to output (Qn)
propagation delays.
VCC
MR INPUT
GND
VM
tW
VCC
Dn INPUT
GND
VOH
tPHL
Qn OUTPUT
VM
VM
VOH
tPHL
Qn OUTPUT
VM
VOL
SV001606
tPLH
Figure 4. Conditional reset input (MR) to output (Qn)
propagation delays.
VOL
SV01608
Figure 2. Data input (D) to output (Qn) propagation delays.
1998 May 20
7
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