CD74HC4351 is in the process of being discontinued
Consider one of these alternates:
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Same functionality with different pin-out to the compared device
CD74HC4051 ACTIVE 5-V, 8:1, 1-channel analog mutliplexer Same functionality without latch
TMUX1308 ACTIVE 5-V, 8:1, 1-channel general-purpose multiplexer with 1.8-V logic control Upgraded 1.8-V logic support and smaller package options

Product details

Configuration 8:1 Number of channels 1 Power supply voltage - single (V) 1.8, 2.5, 3.3, 5 Power supply voltage - dual (V) +/-2.5, +/-5 Protocols Analog Ron (typ) (Ω) 40 CON (typ) (pF) 25 ON-state leakage current (max) (µA) 4 Bandwidth (MHz) 180 Operating temperature range (°C) -55 to 125 Features Break-before-make Input/output continuous current (max) (mA) 25 Rating Catalog Drain supply voltage (max) (V) 6 Supply voltage (max) (V) 10 Negative rail supply voltage (max) (V) 0
Configuration 8:1 Number of channels 1 Power supply voltage - single (V) 1.8, 2.5, 3.3, 5 Power supply voltage - dual (V) +/-2.5, +/-5 Protocols Analog Ron (typ) (Ω) 40 CON (typ) (pF) 25 ON-state leakage current (max) (µA) 4 Bandwidth (MHz) 180 Operating temperature range (°C) -55 to 125 Features Break-before-make Input/output continuous current (max) (mA) 25 Rating Catalog Drain supply voltage (max) (V) 6 Supply voltage (max) (V) 10 Negative rail supply voltage (max) (V) 0
PDIP (N) 20 228.702 mm² 24.33 x 9.4 SOIC (DW) 20 131.84 mm² 12.8 x 10.3
  • Wide Analog Input Voltage Range...±5V (Max)
  • Low "On" Resistance
    • VCC - VEE = 4.5V...70 (Typ)
    • VCC - VEE = 9V...40 (Typ)
  • Low Crosstalk Between Switches
  • Fast Switching and Propagation Speeds
  • "Break-Before-Make" Switching
  • Wide Operating Temperature Range...–55°C to 125°C
  • HC Types
    • 2V to 6V Operation, Control; 0V to 10V Switch
    • High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V
  • HCT Types
    • 4.5V to 5.5V Operation, Control; 0V to 10V Switch
    • Direct LSTTL Input Logic Compatibility, VIL = 0.8V (Max), VIH = 2V (Min)
    • CMOS Input Compatibility, Il 1µA at VOL, VOH

Data sheet acquired from Harris Semiconductor

  • Wide Analog Input Voltage Range...±5V (Max)
  • Low "On" Resistance
    • VCC - VEE = 4.5V...70 (Typ)
    • VCC - VEE = 9V...40 (Typ)
  • Low Crosstalk Between Switches
  • Fast Switching and Propagation Speeds
  • "Break-Before-Make" Switching
  • Wide Operating Temperature Range...–55°C to 125°C
  • HC Types
    • 2V to 6V Operation, Control; 0V to 10V Switch
    • High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V
  • HCT Types
    • 4.5V to 5.5V Operation, Control; 0V to 10V Switch
    • Direct LSTTL Input Logic Compatibility, VIL = 0.8V (Max), VIH = 2V (Min)
    • CMOS Input Compatibility, Il 1µA at VOL, VOH

Data sheet acquired from Harris Semiconductor

The ’HC4351, CD74HCT4351, and CD74HC4352 are digitally controlled analog switches which utilize silicon-gate CMOS technology to achieve operating speeds similar to LSTTL with the low power consumption of standard CMOS integrated circuits.

These analog multiplexers/demultiplexers are, in essence, the HC/HCT4015 and HC4052 preceded by address latches that are controlled by an active low Latch Enable input (LE\). Two Enable inputs, one active low (E1\), and the other active high (E2) are provided allowing enabling with either input voltage level.

The ’HC4351, CD74HCT4351, and CD74HC4352 are digitally controlled analog switches which utilize silicon-gate CMOS technology to achieve operating speeds similar to LSTTL with the low power consumption of standard CMOS integrated circuits.

These analog multiplexers/demultiplexers are, in essence, the HC/HCT4015 and HC4052 preceded by address latches that are controlled by an active low Latch Enable input (LE\). Two Enable inputs, one active low (E1\), and the other active high (E2) are provided allowing enabling with either input voltage level.

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Technical documentation

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Type Title Date
* Data sheet CD54HC4351, CD74HC4351, CD74HCT4351, CD74HC4352 datasheet (Rev. C) 20 Jun 2003
Application note Selecting the Correct Texas Instruments Signal Switch (Rev. E) PDF | HTML 02 Jun 2022
Application note Multiplexers and Signal Switches Glossary (Rev. B) PDF | HTML 01 Dec 2021
Application note Implications of Slow or Floating CMOS Inputs (Rev. E) 26 Jul 2021
Selection guide Logic Guide (Rev. AB) 12 Jun 2017
Application note Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) 02 Dec 2015
User guide LOGIC Pocket Data Book (Rev. B) 16 Jan 2007
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 08 Jul 2004
User guide Signal Switch Data Book (Rev. A) 14 Nov 2003
Application note TI IBIS File Creation, Validation, and Distribution Processes 29 Aug 2002
Application note CMOS Power Consumption and CPD Calculation (Rev. B) 01 Jun 1997
Application note Designing With Logic (Rev. C) 01 Jun 1997
Application note Input and Output Characteristics of Digital Integrated Circuits 01 Oct 1996
Application note Live Insertion 01 Oct 1996
Application note SN54/74HCT CMOS Logic Family Applications and Restrictions 01 May 1996
Application note Using High Speed CMOS and Advanced CMOS in Systems With Multiple Vcc 01 Apr 1996

Design & development

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PDIP (N) 20 View options
SOIC (DW) 20 View options

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