SCAS296O January   1993  – July 2014 SN54LVC374A , SN74LVC374A

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Simplified Schematic
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  Handling Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics
    6. 6.6  Timing Requirements, SN54LVC374A
    7. 6.7  Timing Requirements, SN74LVC374A
    8. 6.8  Timing Requirements, SN74LVC374A
    9. 6.9  Switching Characteristics, SN54LVC374A
    10. 6.10 Switching Characteristics, SN74LVC374A
    11. 6.11 Switching Characteristics, SN74LVC374A
    12. 6.12 Operating Characteristics
    13. 6.13 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
    4. 8.4 Device Functional Modes
  9. 9 Applications and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Related Links
    2. 12.2 Trademarks
    3. 12.3 Electrostatic Discharge Caution
    4. 12.4 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

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6 Specifications

6.1 Absolute Maximum Ratings(1)

over operating free-air temperature range (unless otherwise noted)
MIN MAX UNIT
VCC Supply voltage range –0.5 6.5 V
VI Input voltage range(2) –0.5 6.5 V
VO Voltage range applied to any output in the high-impedance or power-off state(2)(3) –0.5 6.5 V
VO Voltage range applied to any output in the high or low state –0.5 VCC + 0.5 V
IIK Input clamp current VI < 0 –50 mA
IOK Output clamp current VO < 0 –50 mA
IO Continuous output current ±50 mA
Continuous current through VCC or GND ±100 mA
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions are not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) The input negative-voltage and output voltage ratings may be exceeded if the input and output current ratings are observed.
(3) The value of VCC is provided in the recommended operating conditions table.

6.2 Handling Ratings

MIN MAX UNIT
Tstg Storage temperature range –65 150 °C
V(ESD) Electrostatic discharge Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins(1) 0 2 kV
Charged device model (CDM), per JEDEC specification JESD22-C101, all pins(2) 0 1000 V
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. Pins listed as 500 V may actually have higher performance.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. Pins listed as 250 V may actually have higher performance.

6.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)(1)
SN54LVC374A SN74LVC374A UNIT
MIN MAX MIN MAX
VCC Supply voltage Operating 2 3.6 1.65 3.6 V
Data retention only 1.5 1.5
VIH High-level input voltage VCC = 1.65 V to 1.95 V 0.65 × VCC V
VCC = 2.3 V to 2.7 V 1.7
VCC = 2.7 V to 3.6 V 2 2
VIL Low-level input voltage VCC = 1.65 V to 1.95 V 0.35 × VCC V
VCC = 2.3 V to 2.7 V 0.7
VCC = 2.7 V to 3.6 V 0.8 0.8
VI Input voltage 0 5.5 0 5.5 V
VO Output voltage High or low state 0 VCC 0 VCC V
3-state 0 5.5 0 5.5
IOH High-level output current VCC = 1.65 V –4 mA
VCC = 2.3 V –8
VCC = 2.7 V –12 –12
VCC = 3 V –24 –24
IOL Low-level output current VCC = 1.65 V 4 mA
VCC = 2.3 V 8
VCC = 2.7 V 12 12
VCC = 3 V 24 24
Δt/Δv Input transition rise or fall rate 10 10 ns/V
TA Operating free-air temperature –55 125 –40 125 °C
(1) All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, (SCBA004).

6.4 Thermal Information

THERMAL METRIC(1) SN74LVC374A UNIT
PW
20 PIN
RθJA Junction-to-ambient thermal resistance 102.5 °C/W
RθJCtop Junction-to-case (top) thermal resistance 35.9
RθJB Junction-to-board thermal resistance 53.5
ψJT Junction-to-top characterization parameter 2.2
ψJB Junction-to-board characterization parameter 52.9
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, (SPRA953).

6.5 Electrical Characteristics

over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS VCC SN54LVC374A SN74LVC374A SN74LVC374A UNIT
–40°C TO 85°C –40°C TO 125°C
MIN TYP(1) MAX MIN TYP(1) MAX MIN TYP(1) MAX
VOH IOH = –100 μA 1.65 V to
3.6 V		 VCC – 0.2 VCC – 0.2 V
2.7 V to
3.6 V		 VCC – 0.2
IOH = –4 mA 1.65 V 1.2 1.20
IOH = –8 mA 2.3 V 1.7 1.70
IOH = –12 mA 2.7 V 2.2 2.2 2.20
3 V 2.4 2.4 2.40
IOH = –24 mA 3 V 2.2 2.2 2.20
VOL IOL = 100 μA 1.65 V to
3.6 V		 0.2 0.20 V
2.7 V to
3.6 V		 0.2
IOL = 4 mA 1.65 V 0.45 0.45
IOL = 8 mA 2.3 V 0.7 0.70
IOL = 12 mA 2.7 V 0.4 0.4 0.40
IOL = 24 mA 3 V 0.55 0.55 0.55
II VI = 0 to 5.5 V 3.6 V ±5 ±5 ±5 μA
Ioff VI or VO = 5.5 V 0 ±10 ±20 μA
IOZ VO = 0 to 5.5 V 3.6 V ±15 ±10 ±15 μA
ICC VI = VCC or GND IO = 0 3.6 V 10 10 10 μA
3.6 V ≤ VI ≤ 5.5 V(2) 10 10 10
ΔICC One input at VCC  – 0.6 V,
Other inputs at VCC or GND		 2.7 V to
3.6 V		 500 500 500 μA
Ci VI = VCC or GND 3.3 V 4 12 4 75 4 pF
Co VO = VCC or GND 3.3 V 5.5 12 5.5 5.5 pF
(1) All typical values are at VCC = 3.3 V, TA = 25°C.
(2) This applies in the disabled state only.

6.6 Timing Requirements, SN54LVC374A

over recommended operating free-air temperature range (unless otherwise noted) (see Figure 3)
PARAMETER SN54LVC374A UNIT
VCC = 2.7 V VCC = 3.3 V
± 0.3 V
MIN MAX MIN MAX
fclock Clock frequency 80 100 MHz
tw Pulse duration, CLK high or low 3.3 3.3 ns
tsu Setup time, data before CLK↑ 2 2 ns
th Hold time, data after CLK↑ 1.5 1.5 ns

6.7 Timing Requirements, SN74LVC374A

over recommended operating free-air temperature range (unless otherwise noted) (see Figure 3)
PARAMETER SN74LVC374A UNIT
–40°C TO 85°C
VCC = 1.8 V
± 0.15 V		 VCC = 2.5 V
± 0.2 V		 VCC = 2.7 V VCC = 3.3 V
± 0.3 V
MIN MAX MIN MAX MIN MAX MIN MAX
fclock Clock frequency 55 95 80 100 MHz
tw Pulse duration, CLK high or low 9 4 3.3 3.3 ns
tsu Setup time, data before CLK↑ 6 4 2 2 ns
th Hold time, data after CLK↑ 4 2 1.5 1.5 ns

6.8 Timing Requirements, SN74LVC374A

PARAMETER SN74LVC374A UNIT
–40°C TO 85°C
VCC = 1.8 V
± 0.15 V		 VCC = 2.5 V
± 0.2 V		 VCC = 2.7 V VCC = 3.3 V
± 0.3 V
MIN MAX MIN MAX MIN MAX MIN MAX
fclock Clock frequency 40 80 80 100 MHz
tw Pulse duration, CLK high or low 9 4 3.3 3.3 ns
tsu Setup time, data before CLK↑ 6 4 2 2 ns
th Hold time, data after CLK↑ 4 2 1.5 1.5 ns

6.9 Switching Characteristics, SN54LVC374A

over recommended operating free-air temperature range (unless otherwise noted) (see Figure 3)
PARAMETER FROM
(INPUT)		 TO
(OUTPUT)		 SN54LVC374A UNIT
VCC = 2.7 V VCC = 3.3 V
± 0.3 V
MIN MAX MIN MAX
fmax 80 100 MHz
tpd CLK Q 9.5 1 8.5 ns
ten OE Q 9.5 1 8.5 ns
tdis OE Q 8 1 7 ns

6.10 Switching Characteristics, SN74LVC374A

over recommended operating free-air temperature range (unless otherwise noted) (see Figure 3)
PARAMETER FROM
(INPUT)		 TO
(OUTPUT)		 SN74LVC374A UNIT
–40°C TO 85°C
VCC = 1.8 V
± 0.15 V		 VCC = 2.5 V
± 0.2 V		 VCC = 2.7 V VCC = 3.3 V
± 0.3 V
MIN MAX MIN MAX MIN MAX MIN MAX
fmax 55 95 80 100 MHz
tpd CLK Q 21.9 10.8 8.1 1.5 7 ns
ten OE Q 19.8 10.8 8.5 1.5 7.5 ns
tdis OE Q 19.1 18.1 7.1 1.5 6.5 ns
tsk(o) 1 1 1 1 ns

6.11 Switching Characteristics, SN74LVC374A

over operating free-air temperature range (unless otherwise noted)
PARAMETER FROM
(INPUT)		 TO
(OUTPUT)		 SN74LVC374A UNIT
–40°C TO 125°C
VCC = 1.8 V
± 0.15 V		 VCC = 2.5 V
± 0.2 V		 VCC = 2.7 V VCC = 3.3 V
± 0.3 V
MIN MAX MIN MAX MIN MAX MIN MAX
fmax 55 95 80 100 MHz
tpd CLK Q 21.9 10.8 8.1 1.5 7.6 ns
ten OE Q 19.8 10.8 8.9 1.5 8.0 ns
tdis OE Q 19.1 18.1 7.7 1.5 7.0 ns
tsk(o) 1.5 1.5 1.5 1.5 ns

6.12 Operating Characteristics

TA = 25°C
PARAMETER TEST
CONDITIONS		 VCC = 1.8 V VCC = 2.5 V VCC = 3.3 V UNIT
TYP TYP TYP
Cpd Power dissipation capacitance
per flip-flop		 Outputs enabled f = 10 MHz 53 54 54.5 pF
Outputs disabled 12 15 13.5

6.13 Typical Characteristics

D001_SCAS296.gifFigure 1. SN74LVC374A Clock to Q TDP VCC vs TPD at 25°C
D002_SCAS296.gifFigure 2. SN74LVC374A Clock to Q Across Temp 3.3-V VCC