Philips Semiconductors
Product specification
Quadruple bilateral switches
DESCRIPTION
The HEF4066B has four independent bilateral analogue
switches (transmission gates). Each switch has two
input/output terminals (Y/Z) and an active HIGH enable
input (E). When E is connected to V
DD
a low impedance
bidirectional path between Y and Z is established (ON
condition). When E is connected to V
SS
the switch is
HEF4066B
gates
disabled and a high impedance between Y and Z is
established (OFF condition).
The HEF4066B is pin compatible with the HEF4016B but
exhibits a much lower ON resistance. In addition the ON
resistance is relatively constant over the full input signal
range.
Fig.1 Functional diagram.
Fig.2 Pinning diagram.
PINNING
HEF4066BP(N): 14-lead DIL; plastic (SOT27-1)
HEF4066BD(F): 14-lead DIL; ceramic (cerdip)
(SOT73))
HEF4066BT(D): 14-lead SO; plastic (SOT108-1)
( ): Package Designator North America
APPLICATION INFORMATION
An example of application for the HEF4066B is:
•
Analogue and digital switching
E
0
to E
3
Y
0
to Y
3
Z
0
to Z
3
enable inputs
input/output terminals
input/output terminals
Fig.3 Schematic diagram (one switch).
January 1995
2
PHILIPS [ NXP SEMICONDUCTORS ]
