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Número de pieza | HEF4557B | |
Descripción | 1-to-64 bit variable length shift register | |
Fabricantes | Philips | |
Logotipo | ||
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DATA SHEET
For a complete data sheet, please also download:
• The IC04 LOCMOS HE4000B Logic
Family Specifications HEF, HEC
• The IC04 LOCMOS HE4000B Logic
Package Outlines/Information HEF, HEC
HEF4557B
LSI
1-to-64 bit variable length shift
register
Product specification
File under Integrated Circuits, IC04
January 1995
1 page Philips Semiconductors
1-to-64 bit variable length shift register
Product specification
HEF4557B
LSI
AC CHARACTERISTICS
VSS = 0 V; Tamb = 25 °C; CL = 50 pF; input transition times ≤ 20 ns
VDD
V
SYMBOL TYP. MAX.
Propagation delays
CP0, CP1 → O, O
HIGH to LOW
LOW to HIGH
MR → O
HIGH to LOW
MR → O
LOW to HIGH
Output transition times
HIGH to LOW
LOW to HIGH
5
10 tPHL
15
5
10 tPLH
15
5
10 tPHL
15
5
10 tPLH
15
5
10 tTHL
15
5
10 tTLH
15
240 480
90 180
65 130
240 480
90 180
65 130
170 340
80 160
60 120
140 280
70 140
55 110
60 120
30 60
20 40
60 120
30 60
20 40
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
TYPICAL EXTRAPOLATION
FORMULA
213 ns + (0,55 ns/pF) CL
79 ns + (0,23 ns/pF) CL
57 ns + (0,16 ns/pF) CL
213 ns + (0,55 ns/pF) CL
79 ns + (0,23 ns/pF) CL
57 ns + (0,16 ns/pF) CL
143 ns + (0,55 ns/pF) CL
69 ns + (0,23 ns/pF) CL
52 ns + (0,16 ns/pF) CL
113 ns + (0,55 ns/pF) CL
59 ns + (0,23 ns/pF) CL
47 ns + (0,16 ns/pF) CL
10 ns + (1,0 ns/pF) CL
9 ns + (0,42 ns/pF) CL
6 ns + (0,28 ns/pF) CL
10 ns + (1,0 ns/pF) CL
9 ns + (0,42 ns/pF) CL
6 ns + (0,28 ns/pF) CL
Interpolation table (see note next page)
LENGTH CONTROL INPUTS
L1 L2 L4 L8 L16 L32
L L LLL L
HL LLL L
XHLLL L
X XHL L L
X X XHL L
X X XXH L
X X XXX H
Notes
1. H = HIGH state (the more positive voltage)
2. L = LOW state (the less positive voltage)
3. X = state is immaterial
MINIMUM
NUMBER OF
BITS SELECTED
1
2
3
5
9
17
33
SET-UP, HOLD,
RECOVERY
TIMES
specified
six equal steps
specified
January 1995
5
5 Page |
Páginas | Total 7 Páginas | |
PDF Descargar | [ Datasheet HEF4557B.PDF ] |
Número de pieza | Descripción | Fabricantes |
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