Skip to main content
Log in
Texas Instruments SN74AHC574PW — Analog & Data Acquisition

SN74AHC574PW TI 74AHC D-Type Flip-Flop, 115 MHz, 20-TSSOP

MPNSN74AHC574PW
End of Life

Texas Instruments 74AHC series D-Type flip-flop, SN74AHC574PW, octal 8-bit, positive-edge triggered, tri-state non-inverted outputs, 115 MHz clock, 20-TSSOP package.

$1.31Ref. price · indicative, final on quote
Texas Instruments SN74AHC574PW datasheet (PDF)
Packaging20-TSSOP (0.173", 4.40mm Width)
RoHSROHS3 Compliant
Series74AHC
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74AHC574PW specifications
ParameterValue
TypeD-Type
Series74AHC
Output typeTri-State, Non-Inverted
Trigger typePositive Edge
MountingSurface Mount
Voltage2V ~ 5.5V
Current - quiescent4 µA
Current - output high, low8mA, 8mA
Frequency115 MHz
Operating temperature-40°C ~ 85°C (TA)
PackageTube
FunctionStandard
Case20-TSSOP (0.173\", 4.40mm Width)
Input capacitance3 pF
Number of elements1
Number of bits per element8
Max propagation delay @ v, max CL10.6ns @ 5V, 50pF

Product details

Device identity and timing parametrics

The SN74AHC574PW is an octal D-type flip-flop from TI's 74AHC family, packing eight edge-triggered registers into a 20-TSSOP footprint.

Supply flexibility and output drive

Tri-state, non-inverted outputs with 8 mA sink/source capability per channel; the quiescent current sits at 4 µA, so the part adds negligible standby draw in battery-backed or always-on sections. Input capacitance is 3 pF typical — light enough that a 115 MHz clock tree does not need a dedicated buffer for every branch, though the fan-out limit depends on the trace impedance and the driver's rise time.

Temperature grade and package fit

Supplied in tube format — the 20-TSSOP body is moisture-sensitive per J-STD-020; the floor life at 30°C/60% RH depends on the MSL level printed on the bag, which should be verified before the reel is opened for hand assembly or rework.

Frequently asked questions

What is the closest functional second-source to SN74AHC574PW?

The SN74LVC574APWT (74LVC series) is a pin-compatible positive-edge triggered octal D-type with tri-state outputs in a similar TSSOP package. The LVC variant runs at 150 MHz and delivers 24 mA output drive versus 8 mA, but its supply range tops out at 3.6 V — it cannot operate at 5 V like the AHC part. For a 3.3 V board the LVC is a drop-in swap; for a 5 V bus the AHC stays the correct choice.

Will SN74AHC574PW drop into a board laid out for SN74LVC574APWT?

Yes, both parts share the same 20-TSSOP footprint (0.65 mm pitch, 4.40 mm body width). The pinout is identical for the D-type octal flip-flop with tri-state outputs. The only board-level consideration is the supply rail: if the original design runs at 5 V, the AHC part works and the LVC does not; if at 3.3 V, either fits.