SN74AUC1G74
SINGLE POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOP
WITH CLEAR AND PRESET
www.ti.com
SCES537D–DECEMBER 2003–REVISED JUNE 2007
FEATURES
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Available in the Texas Instruments
NanoFree™ Package
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•
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Low Power Consumption, 10-μA Max ICC
±8-mA Output Drive at 1.8 V
•
Optimized for 1.8-V Operation and Is 3.6-V I/O
Tolerant to Support Mixed-Mode Signal
Operation
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
•
ESD Protection Exceeds JESD 22
•
Ioff Supports Partial-Power-Down Mode
Operation
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2000-V Human-Body Model (A114-A)
200-V Machine Model (A115-A)
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Sub-1-V Operable
1000-V Charged-Device Model (C101)
Max tpd of 1.5 ns at 1.8 V
DCT PACKAGE
(TOP VIEW)
DCU PACKAGE
(TOP VIEW)
RSE PACKAGE
(TOP VIEW)
YZP OR YZT PACKAGE
(BOTTOM VIEW)
4
3
2
1
5
6
7
8
Q
GND
Q
CLK
D
VCC
1
2
3
4
8
7
6
5
1
8
7
CLK
D
VCC
CLR
PRE
PRE
CLR
Q
D
CLK
2
Q
PRE
V
CC
GND
VCC
8
4
GND
3
4
6
5
Q
CLR
Q
GND
See mechanical drawings for dimensions.
DESCRIPTION/ORDERING INFORMATION
This single positive-edge-triggered D-type flip-flop is operational at 0.8-V to 2.7-V VCC, but is designed
specifically for 1.65-V to 1.95-V VCC operation.
A low level at the preset (PRE) or clear (CLR) input 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 is transferred to the outputs on the positive-going edge of the clock pulse. Clock triggering occurs
at a voltage level and is not related directly to the rise time of the clock pulse. Following the hold-time interval,
data at the D input can be changed without affecting the levels at the outputs. To better optimize the flip-flop for
higher frequencies, the CLR input overrides the PRE input when they are both low.
NanoFree™ package technology is a major breakthrough in IC packaging concepts, using the die as the
package.
This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs,
preventing damaging current backflow through the device when it is powered down.
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.
NanoFree is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2003–2007, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.