1. General description
The 74HC4051; 74HCT4051 is a high-speed Si-gate CMOS device and is
pin compatible with Low-power Schottky TTL (LSTTL). The device is
specified in compliance with JEDEC standard no. 7A.
The 74HC4051; 74HCT4051 is an 8-channel analog
multiplexer/demultiplexer 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 V to 10.0 V for 74HC4051 and 4.5 V to 5.5 V for
74HCT4051. 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).
2. Features and benefits
Wide analog input voltage range from -5 V to +5 V
Low ON resistance:
80 Ω (typical) at VCC - VEE = 4.5 V
70 Ω (typical) at VCC - VEE = 6.0 V
60 Ω (typical) 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
ESD protection:
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115-A exceeds 200 V
Multiple package options
Specified from -40 ℃ to +85 ℃ and -40 ℃ to +125℃
3. Applications
Analog multiplexing and demultiplexing
Digital multiplexing and demultiplexing
Signal gating
4. Ordering information
| Type number | Package |
| Temperature range | Name | Description | Version |
74HC4051N 74HCT4051N | -40 ℃ to +125 ℃ | DIP16 | plastic dual in-line package; 16 leads (300 mil) | SOT38-4 |
74HC4051D 74HCT4051D | -40 ℃ to +125 ℃ | SO16 | plastic small outline package; 16 leads; body width 3.9 mm | SOT109-1 |
74HC4051DB 74HCT4051DB | -40 ℃ to +125 ℃ | SSOP16 | plastic shrink small outline package; 16 leads; body width 5.3 mm | SOT338-1 |
74HC4051PW 74HCT4051PW | -40 ℃ to +125 ℃ | TSSOP16 | plastic thin shrink small outline package; 16 leads; body width 4.4
mm | SOT403-1 |
74HC4051BQ 74HCT4051BQ | -40 ℃ to +125 ℃ | DHVQFN16 | plastic dual in-line compatible thermal enhanced very thin quad
flat package; no leads; 16 terminals; body 2.5 * 3.5 * 0.85 mm | SOT763-1 |
5. Functional diagram
