SN54LVC74A_15 Datasheet, PDF (1/27 Pages) Texas Instruments – DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH CLEAR AND PRESET

SN54LVC74A, SN74LVC74A
www.ti.com
SCAS287T – JANUARY 1993 – REVISED JULY 2013
DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH CLEAR AND PRESET
Check for Samples: SN54LVC74A, SN74LVC74A
FEATURES
1
• Operate From 1.65 V to 3.6 V
• Inputs Accept Voltages to 5.5 V
• Max t_pd of 5.2 ns at 3.3 V
• Typical V_OLP (Output Ground Bounce)
<0.8 V at V_CC = 3.3 V, T_A = 25°C
• Typical V_OHV (Output V_OH Undershoot)
>2 V at V_CC = 3.3 V, T_A = 25°C
• Latch-Up Performance Exceeds 250 mA Per
JESD 17
• ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
DESCRIPTION
The SN54LVC74A dual positive-edge-triggered D-
type flip-flop is designed for 2.7-V to 3.6-V V_CC
operation, and the SN74LVC74A dual positive-edge-
triggered D-type flip-flop is designed for 1.65-V to 3.6-
V V_CC operation.
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 is transferred to the outputs on the
positive-going edge of the clock pulse. Clock
triggering occurs at a voltage level and is not directly
related 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.
The data I/Os and control inputs are overvoltage
tolerant. This feature allows the use of these devices
for down-translation in a mixed-voltage environment.
SN54LVC74A . . . J OR W PACKAGE
SN74LVC74A . . . D, DB, NS, OR PW PACKAGE
(TOP VIEW)
SN74LVC74A . . . RGY PACKAGE
(TOP VIEW)
SN54LVC74A . . . FK 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
1
1D 2
1CLK 3
1PRE 4
1Q 5
1Q 6
7
14
13 2CLR
12 2D
11 2CLK
10 2PRE
9 2Q
8
1CLK
NC
1PRE
NC
1Q
3 2 1 20 19
4
18
5
17
6
16
7
15
8
14
9 10 11 12 13
2D
NC
2CLK
NC
2PRE
NC - No internal connection
1
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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 the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1993–2013, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are
tested unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.