Register once, drag and drop ECAD models into your CAD tool and speed up your design.

Click here for more information

74HCT6323AD

Programmable ripple counter with oscillator; 3-state

The 74HC6323A; 74HCT6323A is an oscillator designed for quartz crystal combined with a programmable 3-state counter, a 3-state output buffer and an overriding asynchronous master reset (MR). With the two select inputs S1 and S2 the counter can be switched in the divide-by-1, 2, 4 or 8 mode. If left floating the clock is divided by 8. The oscillator is designed to operate either in the fundamental or third overtone mode depending on the crystal and external components applied. On-chip capacitors minimize external component count for third overtone crystal applications. The oscillator may be replaced by an external clock signal at input X1. In this event the other oscillator pin (X2) must be floating. The counter advances on the negative-going transition of X1. A LOW level on MR resets the counter, stops the oscillator and sets the output buffer in the 3-state condition. MR can be left floating since an internal pull-up resistor will make the MR inactive.

The X1 input has CMOS input switching levels and may be driven by a TTL output using a pull-up resistor connected to VCC. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
74HCT6323AD 74HCT6323AD,118 935013720118 SOT96-1 Order product
74HCT6323AD 74HCT6323AD,112 935013720112 SOT96-1 Order product

Features and benefits

  • Programmable 3-stage ripple counter
  • Suitable for over-tone crystal application up to 50 MHz (VCC = 5 V ± 10%)
  • 3-state output buffer
  • Two internal capacitors
  • Recommended operating range for use with third overtone crystals 3 to 6 V
  • Oscillator stop function (MR)
  • Input levels:
    • For 74HC6323: CMOS level
    • For 74HCT6323: TTL level
  • ESD protection:
    • HBM JESD22-A114-A exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
  • Specified from -40 °C to +85 °C and from -40 °C to +125 °C

Applications

  • Control counters
  • Timers
  • Frequency dividers
  • Time-delay circuits
  • CIO (Compact Integrated Oscillator)
  • Third-overtone crystal operation

Parametrics

Type numberProduct statusVCC (V)Output drive capability (mA)Logic switching levelstpd (ns)Power dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Package name
74HCT6323ADProduction4.5 - 5.5± 4TTL17low-40~12515843.0SO8

Package

Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackagePackage informationReflow-/Wave solderingPacking
74HCT6323AD74HCT6323AD,118
( 9350 137 20118 )
Active7T6323A
SO8
(SOT96-1)
SOT96-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1
74HCT6323AD,112
( 9350 137 20112 )
Active7T6323ABulk Pack

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFEFRIFRMTBF (hour)MSLMSL leadfree
74HCT6323AD74HCT6323AD,11874HCT6323AD84.96.621.51E811
74HCT6323AD74HCT6323AD,11274HCT6323AD84.96.621.51E811
Quality and reliability disclaimer

Documentation (5)

File nameTitleTypeDate
74HC_HCT6323AProgrammable ripple counter with oscillator; 3-stateData sheet2018-07-09
AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31
SO-SOJ-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
SO-SOJ-WAVEFootprint for wave solderingWave soldering2009-10-08

Support

If you are in need of design/technical support, let us know and fill in the answer form, we'll get back to you shortly.

Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingBuy online
74HCT6323AD74HCT6323AD,118935013720118Reel 13" Q1/T1Order product
74HCT6323AD74HCT6323AD,112935013720112Bulk PackOrder product

Sample

As a Nexperia customer you can order samples via our sales organization or directly via our Online Sample Store: https://extranet.nexperia.com.

Sample orders normally take 2-4 days for delivery.

If you do not have a direct account with Nexperia our network of global and regional distributors is available and equipped to support you with Nexperia samples.