MM74HCT74 Dual D-Type Flip-Flop with Preset and Clear
February 1984
Revised January 2005
MM74HCT74
Dual D-Type Flip-Flop with Preset and Clear
General Description
The MM74HCT74 utilizes advanced silicon-gate CMOS
technology to achieve operation speeds similar to the
equivalent LS-TTL part. It possesses the high noise immu-
nity and low power consumption of standard CMOS inte-
grated circuits, along with the ability to drive 10 LS-TTL
loads.
This flip-flop has independent data, preset, clear, and clock
inputs and Q and Q outputs. The logic level present at the
data input is transferred to the output during the positive-
going transition of the clock pulse. Preset and clear are
independent of the clock and accomplished by a low level
at the appropriate input.
The 74HCT logic family is functionally and pin-out compati-
ble with the standard 74LS logic family. All inputs are pro-
tected from damage due to static discharge by internal
diode clamps to V
CC
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 consumption in
existing designs.
Features
s
Typical propagation delay: 20 ns
s
Low quiescent current: 40
碌
A maximum (74HCT Series)
s
Low input current: 1
碌
A maximum
s
Fanout of 10 LS-TTL loads
s
Meta-stable hardened
Ordering Code:
Order Number
MM74HCT74M
MM74HCT74SJ
M74HCT74MTC
MM74HCT74N
MM74HCT74N_NL
Package
Number
M14A
M14D
MTC14
N14A
N14A
Package Description
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
Pb-Free 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Pb-Free 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter 鈥淴鈥?to the ordering code.
Pb-Free package per JEDEC J-STD-020B.
漏 2005 Fairchild Semiconductor Corporation
DS005360
www.fairchildsemi.com
1
2
3
4
5
6
7
8
