74LVQ74
Low Voltage Dual D-Type Positive Edge-Triggered
Flip-Flop
General Description
The LVQ74 is a dual D-type flip-flop with Asynchronous
Clear and Set inputs and complementary (Q, Q) outputs. In-
formation at the input is transferred to the outputs on the
positive edge of the clock pulse. Clock triggering occurs at a
voltage level of the clock pulse and is not directly related to
the transition time of the positive-going pulse. After the Clock
Pulse input threshold voltage has been passed, the Data in-
put is locked out and information present will not be trans-
ferred to the outputs until the next rising edge of the Clock
Pulse input.
Asynchronous Inputs:
LOW input to S
D
(Set) sets Q to HIGH level
LOW input to C
D
(Clear) sets Q to LOW level
Clear and Set are independent of clock
Simultaneous LOW on C
D
and S
D
makes both Q and Q
HIGH
Features
n Ideal for low power/low noise 3.3V applications
n Guaranteed simultaneous switching noise level and
dynamic threshold performance
n Guaranteed pin-to-pin skew AC performance
n Guaranteed incident wave switching into 75Ω
Ordering Code:
Order Number Package Number Package Description
74LVQ74SC M14A 14-Lead (0.150" Wide) Molded Small Outline Integrated Circuit, SOIC JEDEC
74LVQ74SJ M14D 14-Lead Molded Small Outline Package, SOIC EIAJ
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbols
Connection Diagram
DS011347-1
DS011347-2
IEEE/IEC
DS011347-3
Pin Assignment
for SOIC JEDEC and EIAJ
DS011347-4
May 1998
74LVQ74 Low Voltage Dual D-Type Positive Edge-Triggered Flip-Flop
© 1998 Fairchild Semiconductor Corporation DS011347 www.fairchildsemi.com
