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SN74HCS74-Q1

ACTIVE

Automotive Schmitt-trigger input dual D-type positive-edge-triggered flip-flops w/ clear and preset

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Data sheet

SN74HCS74-Q1

ACTIVE
Data sheet Order now

Product details

Number of channels 2 Technology family HCS Supply voltage (min) (V) 2 Supply voltage (max) (V) 6 Input type Schmitt-Trigger Output type Push-Pull Clock frequency (max) (MHz) 45 IOL (max) (mA) 7.8 IOH (max) (mA) -7.8 Supply current (max) (µA) 2 Features Balanced outputs, High speed (tpd 10-50ns), Positive input clamp diode Operating temperature range (°C) -40 to 125 Rating Automotive
Number of channels 2 Technology family HCS Supply voltage (min) (V) 2 Supply voltage (max) (V) 6 Input type Schmitt-Trigger Output type Push-Pull Clock frequency (max) (MHz) 45 IOL (max) (mA) 7.8 IOH (max) (mA) -7.8 Supply current (max) (µA) 2 Features Balanced outputs, High speed (tpd 10-50ns), Positive input clamp diode Operating temperature range (°C) -40 to 125 Rating Automotive
SOIC (D) 14 51.9 mm² 8.65 x 6 SOT-23-THN (DYY) 14 13.692 mm² 4.2 x 3.26 TSSOP (PW) 14 32 mm² 5 x 6.4 WQFN (BQA) 14 7.5 mm² 3 x 2.5
  • AEC-Q100 Qualified for automotive applications:
    • Device temperature grade 1: –40°C to +125°C, TA
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classifcation Level C6
  • Wide operating voltage range: 2 V to 6 V
  • Schmitt-trigger inputs allow for slow or noisy input signals
  • Low power consumption
    • Typical ICC of 100 nA
    • Typical input leakage current of ±100 nA
  • ±7.8-mA output drive at 6 V
  • AEC-Q100 Qualified for automotive applications:
    • Device temperature grade 1: –40°C to +125°C, TA
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classifcation Level C6
  • Wide operating voltage range: 2 V to 6 V
  • Schmitt-trigger inputs allow for slow or noisy input signals
  • Low power consumption
    • Typical ICC of 100 nA
    • Typical input leakage current of ±100 nA
  • ±7.8-mA output drive at 6 V

The device contains two independent D-type positive-edge-triggered flip-flops. All inputs include Schmitt triggers, allowing for slow or noisy input signals. A low level at the preset ( PRE) input sets the output high. A low level at the clear ( CLR) input resets the output low. Preset and clear functions are asynchronous and not dependent on 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 (Q, Q) 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 the input clock (CLK) signal. Following the hold-time interval, data at the data (D) input can be changed without affecting the levels at the outputs (Q, Q).

The device contains two independent D-type positive-edge-triggered flip-flops. All inputs include Schmitt triggers, allowing for slow or noisy input signals. A low level at the preset ( PRE) input sets the output high. A low level at the clear ( CLR) input resets the output low. Preset and clear functions are asynchronous and not dependent on 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 (Q, Q) 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 the input clock (CLK) signal. Following the hold-time interval, data at the data (D) input can be changed without affecting the levels at the outputs (Q, Q).
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Type Title Date
* Data sheet SN74HCS74-Q1 Automotive Schmitt-Trigger Input Dual D-Type Positive-Edge-Triggered Flip-Flops With Clear and Preset datasheet (Rev. E) PDF | HTML 07 Dec 2021
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 30 Apr 2024
EVM User's guide 14-24-Logic-EVM User's Guide (Rev. B) PDF | HTML 06 Sep 2022
Functional safety information SN74HCS74-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 11 Mar 2021
Application note Reduce Noise and Save Power with the New HCS Logic Family (Rev. A) 20 Apr 2020

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