© 2005 Fairchild Semiconductor Corporation

DS011617

www.fairchildsemi.com

June 1993

Revised February 2005

74VHC14

Hex Schmitt Inverter

General Description

The VHC14 is an advanced high speed CMOS Hex

Schmitt Inverter fabricated with silicon gate CMOS technol-

ogy. It achieves the high speed operation similar to equiva-

lent Bipolar Schottky TTL while maintaining the CMOS low

power dissipation. Pin configuration and function are the

same as the VHC04 but the inputs have hysteresis

between the positive-going and negative-going input

thresholds, which are capable of transforming slowly

changing input signals into sharply defined, jitter-free out-

put signals, thus providing greater noise margin than con-

ventional inverters.

An input protection circuit ensures that 0V to 7V can be

applied to the input pins without regard to the supply volt-

age. This device can be used to interface 5V to 3V systems

and two supply systems such as battery back up. This cir-

cuit prevents device destruction due to mismatched supply

and input voltages.

Features

s Power down protection is provided on all inputs

s Pin and function compatible with 74HC14

Ordering Code:

Pb-Free package per JEDEC J-STD-020B.

Note 1: Surface mount packages are also available on Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Note 2: “_NL” indicates Pb-Free product (per JEDEC J-STD-020B). Device is available in Tape and Reel only.

Note 3: “_NL” indicates Pb-Free product (per JEDEC J-STD-020B).

Order Number

Package

Number

Package Description

74VHC14M

(Note 1)

M14A

14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow

74VHC14MX_NL

(Note 2)

M14A

Pb-Free 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150"

Narrow

74VHC14SJ

(Note 1)

M14D

Pb-Free 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide

74VHC14MTC

(Note 1)

MTC14

14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

74VHC14MTC_NL

(Note 3)

MTC14

Pb-Free 14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153,

4.4mm Wide

74VHC14MTCX_NL

(Note 2)

MTC14

Pb-Free 14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153,

4.4mm Wide

74VHC14N

N14A

14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide