74LVQ74 Low Voltage Dual D-Type Positive Edge-Triggered Flip-Flop
February 1992
Revised June 2001
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.
Information 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 input is locked out and information present will not be
transferred 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
s
Ideal for low power/low noise 3.3V applications
s
Guaranteed simultaneous switching noise level and
dynamic threshold performance
s
Guaranteed pin-to-pin skew AC performance
s
Guaranteed incident wave switching into 75
鈩?/div>
Ordering Code:
Order Number
74LVQ74SC
74LVQ74SJ
Package Number
M14A
M14D
Package Description
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter 鈥淴鈥?to the ordering code.
Logic Symbols
Connection Diagram
IEEE/IEC
Pin Descriptions
Pin Names
D
1
, D
2
CP
1
, CP
2
C
D1
, C
D2
S
D1
, S
D2
Q
1
, Q
1
, Q
2
, Q
2
漏 2001 Fairchild Semiconductor Corporation
DS011347
Description
Data Inputs
Clock Pulse Inputs
Direct Clear Inputs
Direct Set Inputs
Outputs
www.fairchildsemi.com
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