Fairchild MM74HCT05 Hex Inverter (Open Drain) Data Sheet
Summary
MM74HCT05 hex inverter with open drain outputs by Fairchild. CMOS device with LS-TTL compatibility, 8-10ns propagation delay, 10 LS-TTL fanout, enabling wire-NOR logic. Available in SOIC, SOP, TSSOP, PDIP packages. For digital designers needing level translation or wired-OR in mixed TTL/CMOS systems.
Page 1 Text Content
74H 05 — ex Inverter (O en rain
March 2008
MM74HCT05 Hex Inverter (Open Drain) Features General Description Open drain for wire-NOR function The MM74HCT05 is a logic function fabricated by using
LS-TTL pinout and threshold compatible advanced silicon-gate CMOS technology, which pro- vides the inherent benefits of CMOS—low quiescent
Fanout of 10 LS-TTL loads
power and wide power supply range. The device is also
Typical propagation delays:
input and output characteristic and pinout compatible
– t PZL (with 1kΩ resistor) 10ns
with standard DM74LS logic families. The MM74HCT05
– t PLZ (with 1kΩ resistor) 8ns open drain Hex Inverter requires the addition of an exter-
nal resistor to perform a wire-NOR function. All inputs are protected from static discharge damage by internal diodes to VCC and ground. MM74HCT devices are intended to interface between TTL and NMOS components and standard CMOS devices. These parts are also plug-in replacements for LS-TTL devices and can be used to reduce power con- sumption in existing designs.
Ordering Information
Package
Order Number Number Package Description MM74HCT05M M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150"
Narrow
MM74HCT05SJ M14D 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide MM74HCT05MTC MTC14 14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153,
4.4mm Wide
MM74HCT05N N14A 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering number.
All packages are lead free per JEDEC: J-STD-020B standard.
©1 984 Fairchild Semiconductor Corporation www.fairchildsemi.com MM 74HCT05 Rev. 1.5.0
Page Summary Contents For Fairchild MM74HCT05 Hex Inverter (Open Drain) Data Sheet
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 9 |
| File Size | 336.84 KB |
| Published | June 17, 2026 |
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Frequently Asked Questions
What is the main function of the MM74HCT05?
It's a hex inverter with open drain outputs for wire-NOR functions.
What voltage supply should I use?
Recommended supply voltage is 4.5V to 5.5V.
How does it interface with other logic families?
It's LS-TTL compatible and interfaces between TTL/NMOS and CMOS.