74AHCT594DB NRND

8-bit shift register with output register

The 74AHC594; 74AHCT594 is a high-speed Si-gate CMOS device and is pin compatible with Low-Power Schottky TTL (LSTTL). It is specified in compliance with JEDEC standard No. 7-A.

The 74AHC594; 74AHCT594 is an 8-bit, non-inverting, serial-in, parallel-out shift register that feeds an 8-bit D-type storage register. Separate clocks (SHCP and STCP) and direct overriding clears (SHR and STR) are provided on both the shift and storage registers. A serial output (Q7S) is provided for cascading purposes.

Both the shift and storage register clocks are positive-edge triggered. If the user wishes to connect both clocks together, the shift register will always be one count pulse ahead of the storage register.

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
74AHCT594DB 74AHCT594DB,118 935282015118 SOT338-1 Order product
74AHCT594DB 74AHCT594DB,112 935282015112 SOT338-1 Order product

Features

  • Balanced propagation delays
  • All inputs have Schmitt-trigger actions
  • Inputs accept voltages higher than VCC
  • Wide supply voltage range from 2.0 V to 5.5 V
  • 8-bit serial-in, parallel-out shift register with storage
  • Independent direct overriding clears on shift and storage registers
  • Independent clocks for shift and storage registers
  • Latch-up performance exceeds 100 mA per JESD78 Class II
  • Input levels:
    • For 74AHC594: CMOS level
    • For 74AHCT594: TTL level
  • ESD protection:
    • HBM EIA/JESD22-A114E exceeds 2000 V
    • MM EIA/JESD22-A115-A exceeds 200 V
    • CDM EIA/JESD22-C101C exceeds 1000 V
  • Multiple package options
  • Specified from -40 °C to +85 °C and from -40 °C to +125 °C

Target applications

  • Serial-to parallel data conversion
  • Remote control holding register

Parametrics

Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)tpd (ns)fmax (MHz)No of bitsPower dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Package name
74AHCT594DB
NRND
Not for design in4.5 - 5.5TTL+/- 83.81608low-40~12514842.0SSOP16

Package

Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackageOutline versionReflow-/Wave solderingPacking
74AHCT594DB
NRND
74AHCT594DB,118
( 9352 820 15118 )
ActiveAHT594
SSOP16
(SOT338-1)
SOT338-1SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1

The variants in the table below are discontinued. See the table Discontinuation information for more information.

Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackageOutline versionReflow-/Wave solderingPacking
74AHCT594DB
NRND
74AHCT594DB,112
( 9352 820 15112 )
Withdrawn / End-of-lifeAHT594
SSOP16
(SOT338-1)
SOT338-1SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE
Bulk Pack

Discontinuation information

Type numberOrderable part numberlabel.orderingCodeLast time buy dateLast time delivery dateReplacement productStatusComments
74AHCT594DB
NRND
74AHCT594DB,1129352820151122018-12-312019-06-3074AHCT594DBFull withdrawal

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFMSLMSL leadfree
74AHCT594DB
NRND
74AHCT594DB,11874AHCT594DB11

The variants in the table below are discontinued. See the table Discontinuation information for more information.

Type numberOrderable part numberChemical contentRoHS / RHFMSLMSL leadfree
74AHCT594DB
NRND
74AHCT594DB,11274AHCT594DB11
Quality and reliability disclaimer

Documentation (6)

File nameTitleTypeDate
74AHC_AHCT5948-bit shift register with output registerData sheet2017-07-20
AN11106Pin FMEA for AHC/AHCT familyApplication note2019-01-09
ahct594ahct594 IBIS modelIBIS model2013-04-07
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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Models

File nameTitleTypeDate
ahct594ahct594 IBIS modelIBIS model2013-04-07

Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingBuy online
74AHCT594DB74AHCT594DB,118935282015118Reel 13" Q1/T1Order product
74AHCT594DB74AHCT594DB,112935282015112Bulk PackOrder product

Sample

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Sample orders normally take 2-4 days for delivery.

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