December 1990 2
Philips Semiconductors Product specification
8-channel analog
multiplexer/demultiplexer 74HC/HCT4051
FEATURES
•Wide analog input voltage range: ±5V.
•Low “ON” resistance:
80 Ω(typ.) at VCC −VEE = 4.5 V
70 Ω(typ.) at VCC −VEE = 6.0 V
60 Ω(typ.) at VCC −VEE = 9.0 V
•Logic level translation:
to enable 5 V logic to communicate with ±5 V analog
signals
•Typical “break before make” built in
•Output capability: non-standard
•ICC category: MSI
GENERAL DESCRIPTION
The 74HC/HCT4051 are high-speed Si-gate CMOS
devices and are pin compatible with the “4051” of the
“4000B” series. They are specified in compliance with
JEDEC standard no. 7A.
The 74HC/HCT4051 are 8-channel analog
multiplexers/demultiplexers with three digital select inputs
(S0 to S2), an active LOW enable input (E), eight
independent inputs/outputs (Y0 to Y7) and a common
input/output (Z).
With E LOW, one of the eight switches is selected (low
impedance ON-state) by S0 to S2. With E HIGH, all
switches are in the high impedance OFF-state,
independent of S0 to S2.
VCC and GND are the supply voltage pins for the digital
control inputs (S0 to S2, and E). The VCC to GND ranges
are 2.0 to 10.0 V for HC and 4.5 to 5.5 V for HCT. The
analog inputs/outputs (Y0 to Y7, and Z) can swing between
VCC as a positive limit and VEE as a negative limit.
VCC −VEE may not exceed 10.0 V.
For operation as a digital multiplexer/demultiplexer, VEE is
connected to GND (typically ground).
QUICK REFERENCE DATA
VEE = GND = 0 V; Tamb =25°C; tr=t
f= 6 ns
Notes
1. CPD is used to determine the dynamic power dissipation (PD in µW):
PD=C
PD ×VCC2×fi+∑{ (CL+C
S)×V
CC2×fo} where:
fi= input frequency in MHz
fo= output frequency in MHz
∑{(C
L+C
S
)×V
CC2×fo} = sum of outputs
CL= output load capacitance in pF
CS = max. switch capacitance in pF
VCC = supply voltage in V
2. For HC the condition is VI= GND to VCC
For HCT the condition is VI= GND to VCC −1.5 V
SYMBOL PARAMETER CONDITIONS TYPICAL UNIT
HC HCT
tPZH/ tPZL turn “ON” time CL= 15 pF; RL=1kΩ;
V
CC =5V
E to Vos 22 22 ns
Sn to Vos 20 24 ns
tPHZ/ tPLZ turn “OFF” time
E to Vos 18 16 ns
Sn to Vos 19 20 ns
CIinput capacitance 3.5 3.5 pF
CPD power dissipation capacitance per switch notes 1 and 2 25 25 pF
CSmax. switch capacitance
independent (Y) 5 5 pF
common (Z) 25 25 pF