SN74HC74-Q1_15 Datasheet, PDF (1/14 Pages) Texas Instruments – DUAL D-TYPE POSITIVE-EDGE-TRIGGERED FLIP-FLOP WITH CLEAR AND PRESET

SN74HC74-Q1
DUAL D-TYPE POSITIVE-EDGE-TRIGGERED FLIP-FLOP
WITH CLEAR AND PRESET
SCLS577A − MARCH 2004 − REVISED APRIL 2008
D Qualified for Automotive Applications
D Wide Operating Voltage Range of 2 V to 6 V
D Outputs Can Drive Up To 10 LSTTL Loads
D Low Power Consumption, 80-µA Max I_CC
D Typical t_pd = 15 ns
D ±4-mA Output Drive at 5 V
D Low Input Current of 1 µA Max
D OR PW PACKAGE
(TOP VIEW)
1CLR 1
1D 2
1CLK 3
1PRE 4
1Q 5
1Q 6
GND ⁷
14 V_CC
13 2CLR
12 2D
11 2CLK
10 2PRE
9 2Q
8 _2Q
description/ordering information
The SN74HC74 device contains two independent D-type positive-edge-triggered flip-flops. A low level at the
preset (PRE) or clear (CLR) inputs sets or resets the outputs, regardless of the levels of the other inputs. When
PRE and CLR are inactive (high), data at the data (D) input meeting the setup time requirements are transferred
to the outputs on the positive-going edge of the clock (CLK) pulse. Clock triggering occurs at a voltage level and
is not directly related to the rise time of CLK. Following the hold-time interval, data at the D input can be changed
without affecting the levels at the outputs.
ORDERING INFORMATION^{
T_A
PACKAGE^‡
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
−40°C to 125°C
SOIC − D
TSSOP − PW
Reel of 2500
Reel of 2000
SN74HC74QDRQ1
SN74HC74QPWRQ1
HC74Q
HC74Q
† _{For the most current package and ordering information, see the Package Option Addendum at the end of}
this document, or see the TI web site at http://www.ti.com.
‡ _{Package drawings, thermal data, and symbolization are available at http://www.ti.com/packaging.}
FUNCTION TABLE
INPUTS
OUTPUTS
PRE CLR CLK D
Q
Q
L
H
X
X
H
L
H
L
X
X
L
H
L
L
X
X
H^†
H^†
H
H
↑
H
H
L
H
H
↑
L
L
H
H
H
L
X
Q₀
Q₀
† _{This configuration is nonstable; that is, it does not}
persist when PRE or CLR returns to its inactive
(high) level.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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