LH5481 Ver la hoja de datos (PDF) - Sharp Electronics
Número de pieza
componentes Descripción
Fabricante
LH5481 Datasheet PDF : 16 Pages
| |||
64 × 8 / 64 × 9 FIFO
LH5481/91
AC ELECTRICAL CHARACTERISTICS 1 (Over Operating Range)
SYMBOL
fO
tPHSI
tPLSI
tSSI
tHSI
PARAMETER
Operating Frequency 2
SI HIGH Time 3,8
SI LOW Time 3,8
Data Setup to SI 4
Data Hold from SI 4
15MHz
MIN MAX
15
15
20
–1
14
25MHz
MIN MAX
25
11
18
–1
12
tDLIR
Delay, SI HIGH to IR LOW
20
18
tDHIR
tPHSO
tPLSO
Delay, SI LOW to IR HIGH
SO HIGH Time 3
SO LOW Time 3
24
20
15
11
20
18
tDLOR
Delay, SO HIGH to OR LOW
20
18
tDHOR
Delay, SO LOW to OR HIGH
24
20
tSOR
Data Setup to OR HIGH
–1
–1
tHSO
Data Hold from SO LOW
0
0
tFT
Fallthrough Time
36
34
tBT
tSIR
tHIR
tPIR
tPOR
tDLZOE
tDHZOE
Bubblethrough Time
Data Setup to IR 5
Data Hold from IR 5
Input Ready Pulse HIGH 8
Output Ready Pulse HIGH 8
OE LOW to LOW Z (LH5481) 6,9
OE HIGH to HIGH Z (LH5481) 6,9
28
26
5
5
5
5
7
7
7
7
35
30
35
30
tDHHF
SI LOW to HF HIGH
40
40
tDLHF
SO LOW to HF LOW
40
40
tDLAFE
SO or SI LOW to AFE LOW
40
40
tDHAFE
SO or SI LOW to AFE HIGH
40
40
tPMR
MR Pulse Width
35
35
tDSI
tDOR
tDIR
tLXMR
MR HIGH to SI HIGH
MR LOW to OR LOW 7
MR LOW to IR HIGH 7
MR LOW to Output LOW 7
25
25
25
25
25
25
25
25
tAFE
MR LOW to AFE HIGH
30
30
tHF
MR LOW to HF LOW
30
30
tOD
SO LOW to Next Data Out Valid
26
22
NOTES:
1. All time measurements performed at ‘AC Test Conditions.’
2. fO = fSI = fSO.
3. tPHSI + tPLSI = tPHSO + tPLSO = I/fO.
4 tSSI and tHSI apply when memory is not full.
5. tSIR and tHIR apply when memory is full and SI is HIGH.
6. High-Z transitions are referenced to the steady-state VOH – 500 mV and VOL + 500 mV levels on the output.
7. After reset goes LOW, all Data outputs will be at LOW level, IR goes HIGH and OR goes LOW.
8. Common dash number devices are guaranteed by design to function properly in a cascaded configuration.
35MHz
MIN MAX
35
9
17
–1
10
16
18
9
17
16
18
–1
0
30
25
5
5
7
7
25
25
36
36
36
36
35
22
20
20
20
30
30
20
UNITS
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
5
Share Link: 