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PDF HEF4521B Data sheet ( Hoja de datos )
| Número de pieza | HEF4521B | |
| Descripción | 24-stage frequency divider and oscillator | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
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INTEGRATED CIRCUITS
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
HEF4521B
MSI
24-stage frequency divider and
oscillator
Product specification
File under Integrated Circuits, IC04
January 1995
1 page  
Philips Semiconductors
24-stage frequency divider and oscillator
Product specification
HEF4521B
MSI
Fig.4 Schematic diagram of clock input circuitry.
AC CHARACTERISTICS
VSS = 0 V; Tamb = 25 °C; CL = 50 pF; input transition times ≤ 20 ns
VDD
V SYMBOL MIN. TYP.
MAX.
Propagation delays
I2 → O18
HIGH to LOW
LOW to HIGH
On → On + 1
HIGH to LOW
LOW to HIGH
MR → On
HIGH to LOW
I1 → O1
HIGH to LOW
LOW to HIGH
5
10 tPHL
15
5
10 tPLH
15
5
10 tPHL
15
5
10 tPLH
15
5
10 tPHL
15
5
10 tPHL
15
5
10 tPLH
15
950 1900
350 700
220 440
950 1900
350 700
220 440
40 80
15 30
10 20
40 80
15 30
10 20
120 240
55 110
40 80
90 180
35 70
25 50
60 120
30 60
20 40
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
TYPICAL
EXTRAPOLATION
FORMULA
923 ns + (0,55 ns/pF) CL
339 ns + (0,23 ns/pF) CL
212 ns + (0,16 ns/pF) CL
923 ns + (0,55 ns/pF) CL
339 ns + (0,23 ns/pF) CL
212 ns + (0,16 ns/pF) CL
13 ns + (0,55 ns/pF) CL
4 ns + (0,23 ns/pF) CL
2 ns + (0,16 ns/pF) CL
13 ns + (0,55 ns/pF) CL
4 ns + (0,23 ns/pF) CL
2 ns + (0,16 ns/pF) CL
93 ns + (0,55 ns/pF) CL
44 ns + (0,23 ns/pF) CL
32 ns + (0,16 ns/pF) CL
63 ns + (0,55 ns/pF) CL
24 ns + (0,23 ns/pF) CL
17 ns + (0,16 ns/pF) CL
33 ns + (0,55 ns/pF) CL
19 ns + (0,23 ns/pF) CL
12 ns + (0,16 ns/pF) CL
January 1995
5
5 Page 
Philips Semiconductors
24-stage frequency divider and oscillator
Product specification
HEF4521B
MSI
Fig.11 Voltage gain VO/VI as a function of supply
voltage.
Fig.12 Supply current as a function of supply
voltage.
Fig.13 Test set-up for measuring graphs of Figs 11 and 12.
January 1995
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet HEF4521B.PDF ] | |
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