74HC173DB NRND

Quad D-type flip-flop; positive-edge trigger; 3-state

The 74HC173; 74HCT173 is a quad positive-edge triggered D-type flip-flop. The device features clock (CP), master reset (MR), two input enable (E1, E2) and two output enable (OE1, OE2) inputs. When the input enables are LOW, the outputs Qn will assume the state of their corresponding Dn inputs that meet the set-up and hold time requirements on the LOW-to-HIGH clock (CP) transition. A HIGH on either input enable will cause the device to go into a hold mode, outputs hold their previous state independently of clock and data inputs. A HIGH on MR forces the outputs LOW independently of clock and data inputs. A HIGH on either output enable pin causes the outputs to assume a high-impedance OFF-state. Operation of the output enable inputs does not affect the state of the flip-flops. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

Not recommended for new designs (NRND), click here for the alternative product.

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
74HC173DB 74HC173DB,118 935189250118 SOT338-1 Order product
74HC173DB 74HC173DB,112 935189250112 SOT338-1 Order product

Features

  • Complies with JEDEC standard no. 7A
  • Input levels:
    • For 74HC173: CMOS level
    • For 74HCT173: TTL level
  • Gated input enable for hold (do nothing) mode
  • Gated output enable control mode
  • Edge-triggered D-type register
  • Asynchronous master reset
  • ESD protection:
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
  • Specified from —40 °C to +85 °C and —40 °C to +125 °C

Target applications

Parametrics

Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)tpd (ns)fmax (MHz)Power dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Package name
74HC173DB
NRND
Not for design in2.0 - 6.0CMOS+/- 7.81788low-40~12514842.0SSOP16

Package

Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackageOutline versionReflow-/Wave solderingPacking
74HC173DB
NRND
74HC173DB,118
( 9351 892 50118 )
ActiveHC173
SSOP16
(SOT338-1)
SOT338-1SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1
74HC173DB,112
( 9351 892 50112 )
ActiveHC173Bulk Pack

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFMSLMSL leadfree
74HC173DB
NRND
74HC173DB,11874HC173DB11
74HC173DB
NRND
74HC173DB,11274HC173DB11
Quality and reliability disclaimer

Documentation (6)

File nameTitleTypeDate
74HC_HCT173Quad D-type flip-flop; positive-edge trigger; 3-stateData sheet2017-03-17
AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31
SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
SSOP-TSSOP-VSO-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
SOT338-1plastic, shrink small outline package; 16 leads; 0.65 mm pitch; 6.2 mm x 5.3 mm x 2 mm bodyOutline drawing2018-10-18

Support

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Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingBuy online
74HC173DB74HC173DB,118935189250118Reel 13" Q1/T1Order product
74HC173DB74HC173DB,112935189250112Bulk PackOrder product

Sample

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