74ALVCH16821
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.
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 class 2 exceeds 2000 V
- CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V
- Specified from -40 °C to +85 °C
Parametrics
| Type number | VCC (V) | Logic switching levels | Output drive capability (mA) | tpd (ns) | fmax (MHz) | Power dissipation considerations | Tamb (°C) | Package name |
|---|---|---|---|---|---|---|---|---|
| 74ALVCH16821DGG | 1.2 - 3.6 | TTL | ± 24 | 2.5 | 350 | low | -40~85 | TSSOP56 |
Package
| Type number | Orderable part number, (Ordering code (12NC)) | Status | Marking | Package | Package information | Reflow-/Wave soldering | Packing |
|---|---|---|---|---|---|---|---|
| 74ALVCH16821DGG | 74ALVCH16821DGG,11 (935259010118) |
Active | ALVCH16821 |
TSSOP56 (SOT364-1) |
SOT364-1 |
SSOP-TSSOP-VSO-WAVE
|
SOT364-1_118 |
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,512 (935259000512) |
Obsolete | ALVCH16821 Standard Procedure Standard Procedure |
SSOP56 (SOT371-1) |
SOT371-1 |
SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE |
Not available |
| 74ALVCH16821DL,518 (935259000518) |
Obsolete | ALVCH16821 Standard Procedure Standard Procedure | Not available | ||||
| 74ALVCH16821DL,112 (935259000112) |
Obsolete | ALVCH16821 Standard Procedure Standard Procedure | Not available | ||||
| 74ALVCH16821DL,118 (935259000118) |
Obsolete | ALVCH16821 Standard Procedure Standard Procedure | Not available |
Environmental information
| Type number | Orderable part number | Chemical content | RoHS | RHF-indicator |
|---|---|---|---|---|
| 74ALVCH16821DGG | 74ALVCH16821DGG,11 | 74ALVCH16821DGG |
|
|
All type numbers in the table below are discontinued.
| Type number | Orderable part number | Chemical content | RoHS | RHF-indicator |
|---|---|---|---|---|
| 74ALVCH16821DL | 74ALVCH16821DL,512 | 74ALVCH16821DL |
|
|
| 74ALVCH16821DL | 74ALVCH16821DL,518 | 74ALVCH16821DL |
|
|
| 74ALVCH16821DL | 74ALVCH16821DL,112 | 74ALVCH16821DL |
|
|
| 74ALVCH16821DL | 74ALVCH16821DL,118 | 74ALVCH16821DL |
|
|
Documentation (10)
| File name | Title | Type | Date |
|---|---|---|---|
| 74ALVCH16821 | 20-bit bus-interface D-type flip-flop; positive-edge trigger; 3-state | Data sheet | 2024-07-09 |
| sh00004 | Block diagram: 74ABT16821ADGG, 74ABT16821ADL, 74ALVCH16821DGG, 74ALVCH16821DL, 74ALVT162821DGG, 74ALVT162821DL | Block diagram | 2009-11-04 |
| SOT364-1 | 3D model for products with SOT364-1 package | Design support | 2020-01-22 |
| alvch16821 | alvch16821 IBIS model | IBIS model | 2013-04-08 |
| Nexperia_package_poster | Nexperia package poster | Leaflet | 2020-05-15 |
| SOT364-1 | plastic, thin shrink small outline package; 56 leads; 0.5 mm pitch; 14 mm x 6.1 mm x 1.2 mm body | Package information | 2022-06-23 |
| 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 |
| Nexperia_Selection_guide_2023 | Nexperia Selection Guide 2023 | Selection guide | 2023-05-10 |
| SSOP-TSSOP-VSO-WAVE | Footprint for wave soldering | Wave soldering | 2009-10-08 |
Support
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Models
| File name | Title | Type | Date |
|---|---|---|---|
| SOT364-1 | 3D model for products with SOT364-1 package | Design support | 2020-01-22 |
| alvch16821 | alvch16821 IBIS model | IBIS model | 2013-04-08 |
Ordering, pricing & availability
Sample
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