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74ALVCH16821DL

20-bit bus-interface D-type flip-flop; positive-edge trigger; 3-state

The 74ALVCH16821 has two 10-bit, edge triggered registers, with each register coupled to a 3-state output buffer. The two sections of each register are controlled independently by the clock (nCP) and output enable (nOE) control gates.

Each register is fully edge triggered. The state of each nDn input, one set-up time before the Low-to-High clock transition, is transferred to the corresponding flip-flop’s nQn output.

When nOE is LOW, the data in the register appears at the outputs. When nOE is HIGH, the outputs are in high impedance OFF state. Operation of the nOE input does not affect the state of the flip-flops.

The 74ALVCH16821 has active bus hold circuitry which is provided to hold unused or floating data inputs at a valid logic level. This feature eliminates the need for external pull-up or pull-down resistors.

This product has been discontinued

Features and benefits

  • Wide supply voltage range from 1.2 V to 3.6 V

  • CMOS low-power consumption

  • Direct interface with TTL levels

  • Current drive ± 24 mA at 3.0 V

  • MULTIBYTE flow-through standard pin-out architecture

  • Low inductance multiple VCC and GND pins for minimum noise and ground bounce

  • Output drive capability 50 Ω transmission lines at 85°C

  • All data inputs have bushold

  • Complies with JEDEC standard no. 8-1A

  • Complies with JEDEC standards:

    • JESD8-5 (2.3 V to 2.7 V)

    • JESD8B/JESD36 (2.7 V to 3.6 V)

  • ESD protection:

    • HBM ANSI/ESDA/JEDEC JS-001 exceeds 2000 V

    • CDM JESD22-C101E exceeds 1000 V

Applications

Parametrics

Type number Product status Package name
74ALVCH16821DL End of life SSOP56

Package

All type numbers in the table below are discontinued.

Type number Orderable part number, (Ordering code (12NC)) Status Marking Package Package information Reflow-/Wave soldering Packing
74ALVCH16821DL 74ALVCH16821DL,112
(935259000112)		 Obsolete ALVCH16821 Standard Procedure Standard Procedure SOT371-1
SSOP56
(SOT371-1) 		SOT371-1 SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE
Not available
74ALVCH16821DL,118
(935259000118)		 Obsolete ALVCH16821 Standard Procedure Standard Procedure Not available
74ALVCH16821DL,512
(935259000512)		 Obsolete ALVCH16821 Standard Procedure Standard Procedure Not available
74ALVCH16821DL,518
(935259000518)		 Obsolete ALVCH16821 Standard Procedure Standard Procedure Not available

Environmental information

All type numbers in the table below are discontinued.

Type number Orderable part number Chemical content RoHS RHF-indicator
74ALVCH16821DL 74ALVCH16821DL,112 74ALVCH16821DL rohs rhf rhf
74ALVCH16821DL 74ALVCH16821DL,118 74ALVCH16821DL rohs rhf rhf
74ALVCH16821DL 74ALVCH16821DL,512 74ALVCH16821DL rohs rhf rhf
74ALVCH16821DL 74ALVCH16821DL,518 74ALVCH16821DL rohs rhf rhf
Quality and reliability disclaimer

Series

Documentation (6)

File name Title Type Date
74ALVCH16821 20-bit bus-interface D-type flip-flop; positive-edge trigger; 3-state Data sheet 2018-02-02
alvch16821 alvch16821 IBIS model IBIS model 2013-04-07
Nexperia_package_poster Nexperia package poster Leaflet 2020-05-15
SOT371-1 plastic, shrink small outline package; 56 leads; 0.635 mm pitch; 18.45 mm x 7.5 mm x 2.8 mm body Package information 2020-04-21
SSOP-TSSOP-VSO-REFLOW Footprint for reflow soldering Reflow soldering 2009-10-08
SSOP-TSSOP-VSO-WAVE Footprint for wave soldering Wave soldering 2009-10-08

Support

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Models

File name Title Type Date
alvch16821 alvch16821 IBIS model IBIS model 2013-04-07

How does it work?

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Interactive datasheet