hef40244b NXP Semiconductors, hef40244b Datasheet - Page 4

• Manufacturer Part Number: hef40244b
• Description: Octal Buffers With 3-state Outputs
• Manufacturer: NXP Semiconductors

Philips Semiconductors
AC CHARACTERISTICS
V
January 1995
ALL BUFFERS
SWITCHING
Dynamic power
SS
Octal buffers with 3-state outputs
dissipation per
package (P)
(1) P-channel MOS transistor conducting.
(2) P-channel MOS transistor and bipolar
Fig.4 Typical output source current characteristic.
= 0 V; T
n-p-n transistor conducting.
amb
= 25 C; input transition times
V
10
15
V
DD
5
TYPICAL FORMULA FOR P ( W)
20 ns
17 000 f
46 000 f
4 250 f
i
i
i
4
(f
(f
(f
o
o
o
C
C
C
L
L
L
)
)
)
Fig.5 Schematic diagram of output stage.
V
V
V
DD
DD
DD
2
2
2
where
f
f
C
V
i
o
DD
= input freq. (MHz)
L
= output freq. (MHz)
(f
= load capacitance (pF)
o
C
= supply voltage (V)
L
) = sum of outputs
HEF40244B
Product specification
buffers