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PDF HEF40245B Data sheet ( Hoja de datos )
| Número de pieza | HEF40245B | |
| Descripción | Octal bus transceiver with 3-state outputs | |
| 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
HEF40245B
buffers
Octal bus transceiver with 3-state
outputs
Product specification
File under Integrated Circuits, IC04
January 1995
1 page  
Philips Semiconductors
Octal bus transceiver with 3-state outputs
AC CHARACTERISTICS
VSS = 0 V; Tamb = 25 °C; CL = 50 pF; input transition times ≤ 20 ns
VDD
V
SYMBOL MIN. TYP. MAX.
Propagation delays
An → Bn
HIGH to LOW
An → Bn
LOW to HIGH
Output transition
times
HIGH to LOW
LOW to HIGH
3-state propagation delays
Output disable times
EO → An, Bn
HIGH
LOW
Output enable times
EO → An, Bn
HIGH
LOW
5
10 tPHL
15
5
10 tPLH
15
5
10 tTHL
15
5
10 tTLH
15
5
10 tPHZ
15
5
10 tPLZ
15
5
10 tPZH
15
5
10 tPZL
15
95 190
40 80
30 60
85 170
40 80
30 60
40 80
20 40
15 30
30 60
20 40
15 30
100 200
50 100
40 80
100 200
60 120
50 100
100 200
45 90
35 70
115 230
55 110
45 90
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Product specification
HEF40245B
buffers
TYPICAL EXTRAPOLATION
FORMULA
83 ns + (0,24 ns/pF) CL
35 ns + (0,10 ns/pF) CL
26 ns + (0,07 ns/pF) CL
82 ns + (0,06 ns/pF) CL
38 ns + (0,03 ns/pF) CL
29 ns + (0,02 ns/pF) CL
see Fig.6
ALL BUFFERS
SWITCHING
Dynamic power
dissipation per
package (P)
January 1995
VDD
V
TYPICAL FORMULA FOR P (µW)
5
4 250 fi + ∑ (foCL) × VDD2
where
10
17 000 fi + ∑ (foCL) × VDD2
fi = input freq. (MHz)
15
46 000 fi + ∑ (foCL) × VDD2
fo = output freq. (MHz)
CL = load capacitance (pF)
∑ (foCL) = sum of outputs
VDD = supply voltage (V)
5
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet HEF40245B.PDF ] | |
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