MT8816AP1 - 8x16 Analog Crosspoint Switch IC | Microchip
N.º de pieza: MT8816AP1 ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $7.56 | $7,56 |
| 10 | $6.95 | $69,50 |
| 100 | $6.1 | $610,00 |
| 500 | $5.35 | $2.675,00 |
| 1.000 | $4.75 | $4.750,00 |
MT8816AP1 Descripción general
An analog crosspoint switch is a semiconductor device that allows any of M input channels to be connected to any of N output channels through a programmable matrix, forming the switching core of telecom test equipment, audio routing systems, and instrumentation. The MT8816 family belongs to the broader category of analog switches and multiplexers, which sit hierarchically under interface ICs in the signal-chain taxonomy: analog crosspoint switch -> analog switch -> multiplexer -> interface IC -> integrated circuit. ISO-CMOS technology refers to a dielectrically-isolated CMOS process that yields low leakage, high latch-up immunity, and excellent analog signal integrity for audio-frequency and baseband signal routing.
Key specifications include a maximum on-resistance of 65 ohm at VDD and 100 ohm at lower supply rails, low distortion full-CMOS switching, low feedthrough, and short set-up and hold times for the digital control interface. The 7-to-128 decoder means only seven address lines plus one data line are required to control all 128 crosspoints, simplifying host-ASIC or microcontroller glue logic. The integrated latch retains the last selected switch state without continuous address-bus activity, lowering software overhead in PCM/telecom and ATE designs.
Typical applications include telecommunications line cards (T1/E1 switching, time-slot interchange), PCM test access, video and audio signal routing, automated test equipment (ATE) pin electronics, and PBX/key-system line selection. The wide ±12 V analog headroom makes it suitable for codec loopback and subscriber-line interface circuits.
When designing with the MT8816AP1, observe absolute maximum analog signal ratings and provide adequate VDD decoupling to keep digital switching transients out of the analog path. Use the EN pin and address latches to implement broadcast or sequential-scan patterns and minimize channel-to-channel charge injection in measurement paths.
This page consolidates distributor pricing, drop-in alternative candidates, and practical design guidance that supplements the manufacturer datasheet and accelerates your component selection.
Alternativas directas para MT8816AP1 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
MT8816AP
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MT8816AE1
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MT8812AP1
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MT8816AP1
✅ Sustitución directa✓ En stock
$4.75 / unidad
Ver hoja de datos →MT8816AP1 Valores máximos y características eléctricas
| Switch Type | 8 x 16 Analog Crosspoint Array |
| Number of Channels | 1 (matrix of 128 switches) |
| Crosspoint Configuration | 8 rows x 16 columns |
| On-Resistance (RON) | 65 ohm max at VDD |
| On-Resistance (Alternate) | 100 ohm max |
| Analog Signal Range | ±12 V peak-to-peak |
| Technology | ISO-CMOS (dielectric isolation) |
| Built-in Decoder | 7-to-128 line decoder |
| Latch Circuit | Yes (transparent data latch) |
| Feedthrough | Minimum (low feedthrough design) |
| Distortion | Low distortion (full CMOS switch) |
| Encapsulado | 44-PLCC (16.59 x 16.59 mm) |
| Tipo de montaje | Surface Mount |
| Lead-Free / RoHS | Pb-Free per distributor page |
| Applications | Telecom switching, PCM routing, ATE, audio/video routing |
Guía de configuración de pines de MT8816AP1 44-plcc (16.59 x 16.59 mm)
Configuración de pines para MT8816AP1 (encapsulado 44-plcc (16.59 x 16.59 mm)). La numeración de pines, las funciones y los diagramas de conexión se definen en la hoja de datos del fabricante. Consúltela para conocer el footprint exacto y las directrices de soldadura.
No hay datos detallados de patillaje disponibles para MT8816AP1.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
MT8816AP1 es adecuado para 7 aplicacións: Telecommunications Line Card Switching, PCM Test Access and Monitoring, Audio Signal Routing Matrix, Automated Test Equipment (ATE) Pin Electronics, PBX and Key-System Line Selection, Video and Baseband Signal Routing, Data Acquisition Matrix Switching.
Telecommunications Line Card Switching
The MT8816AP1 is widely used in T1/E1 line cards and central-office switching matrices because its 8x16 array allows any of 8 voice channels to be routed to any of 16 time slots or test points. The ±12 Vpp analog headroom accommodates codec and SLIC signal levels without clipping, while the 65 ohm max RON preserves audio fidelity across the switch. Engineers typically pair it with codec ICs and control it via a microcontroller driving the 7 address lines plus data and strobe. The integrated latch retains the routing map between updates, lowering CPU overhead. Compared with discrete 4:1 muxes, this single IC replaces 16 individual switches and the host-side glue logic.
Recomendado
PCM Test Access and Monitoring
In PCM test access applications, the MT8816AP1 routes any of 8 incoming PCM highways to a test instrument or monitoring tap with a single 7-bit address write. The low feedthrough and low distortion specifications keep test signals clean, preserving eye-pattern integrity for jitter measurement. Its 7-to-128 decoder reduces FPGA pin count, and the transparent latch enables atomic switchovers without glitches. This makes it ideal for non-intrusive monitoring in central-office and PBX environments where signal integrity is paramount.
Recomendado
Audio Signal Routing Matrix
Studio and broadcast audio routers use the MT8816AP1 to switch 8 stereo sources across 16 outputs, since its low-distortion full-CMOS switch preserves audio quality better than mechanical relays. The 65 ohm RON keeps insertion loss below 0.5 dB in a 600-ohm audio path, while the wide analog swing covers pro-audio line levels. Microcontroller-driven address updates enable preset recall and crosspoint muting. Compared to electromechanical relays, the MT8816AP1 offers silent switching, no contact bounce, and 100x longer operational life.
Recomendado
Automated Test Equipment (ATE) Pin Electronics
ATE pin-electronics cards use the MT8816AP1 to matrix analog stimulus and measurement resources across hundreds of DUT pins, leveraging its 128-crosspoint density to reduce component count. The 65 ohm RON is acceptable for most analog stimulus paths, and the latched control allows scan-pattern reuse across test sequences. Compared to discrete FET switches, the integrated decoder simplifies the test-head controller interface and reduces calibration overhead. The PLCC package is well-suited to socketed ATE designs where frequent replacement is required.
Recomendado
PBX and Key-System Line Selection
Small-to-medium PBX and key-system designs use the MT8816AP1 as the central line-selection crosspoint, connecting 8 line interfaces to 16 station ports. The integrated latch holds the current connection during power events, supporting hot-standby redundancy. The ISO-CMOS process provides high latch-up immunity, critical for the long cable runs typical of PBX installations. Compared to relay-based designs, this part reduces board area by 70% and eliminates moving mechanical components, increasing MTBF significantly.
Recomendado
Video and Baseband Signal Routing
Industrial video routers and baseband signal switchers use the MT8816AP1 to route 8 composite video sources across 16 monitor or recorder outputs. While not specified for high-definition digital video, it handles analog composite and baseband RF signals cleanly within its bandwidth. The 65 ohm RON keeps insertion loss low, and the wide analog range handles sync and chroma signal swings. Compared to discrete transistor switches, the MT8816AP1 simplifies PCB layout and provides repeatable channel-to-channel performance.
Recomendado
Data Acquisition Matrix Switching
Multi-channel data-acquisition systems use the MT8816AP1 as a front-end matrix to route 8 sensor inputs across 16 measurement channels or ADC inputs. The low feedthrough minimizes crosstalk between adjacent sensor channels, improving effective resolution. The integrated latch allows scan-list-based channel sequencing, freeing the host microcontroller to focus on measurement tasks. Compared to reed-relay matrices, the MT8816AP1 offers faster switching (microseconds vs milliseconds), longer life, and zero contact bounce that would otherwise require debounce logic.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MT8816AP1 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MT8816AP | MT8816AE1 | MT8812AP1 |
|---|---|---|---|---|
| Package | 44-PLCC (16.59x16.59 mm) | 44-Pin DIP (through-hole) | 44-PLCC | 44-PLCC |
| Brand | Microchip Technology (ex-Zarlink) | Microchip Technology | Microchip Technology | Microchip Technology |
| Crosspoint Array | 8 x 16 (128 switches) | 8 x 16 (128 switches) | 8 x 16 (128 switches) | 8 x 12 (96 switches) |
| On-Resistance (RON max) | 65 ohm | 65 ohm | 65 ohm | 65 ohm |
| Analog Signal Range | ±12 Vpp | ±12 Vpp | ±12 Vpp | ±12 Vpp |
| Technology | ISO-CMOS | ISO-CMOS | ISO-CMOS | ISO-CMOS |
| Built-in Decoder | 7-to-128 | 7-to-128 | 7-to-128 | 7-to-96 |
| Lead-Free / RoHS | Yes | Yes | Yes | Yes |
Diferenciadores clave
- Highest crosspoint density in the 44-PLCC package (frente a MT8812AP1)
- Built-in 7-to-128 decoder reduces host GPIO by 85% (frente a Discrete 4:1 muxes (e.g., CD4051B))
- ISO-CMOS dielectric isolation for high latch-up immunity (frente a Standard CMOS analog switches (e.g., CD4067B))
Notas de diseño
Estimated: with VDD at +5 V and all 128 switches toggling simultaneously, peak VDD inrush current can reach tens of mA due to gate-capacitance charging. Place a 10 uF bulk capacitor plus a 100 nF ceramic decoupling cap within 5 mm of the VDD pin. Add a ferrite bead if the analog signal path shares the same supply rail to prevent digital switching noise from coupling into the analog switch path.
Keep analog X/Y traces away from the digital address and strobe lines. Use a ground guard ring around the analog switch array pins to minimize digital-to-analog crosstalk. The 44-PLCC package exposes the die attach pad; connect it to analog ground for improved thermal dissipation and noise isolation. Maintain symmetrical trace lengths for X and Y lines to preserve channel-to-channel RON matching.
Charge injection at the switch node can cause a brief voltage transient when changing crosspoints. To minimize this, sequence address and data updates during the strobe window and allow at least 100 ns settling before sampling downstream signals. For sensitive measurement applications, add a sample-and-hold or blanking circuit on the output. The internal latch holds the previous crosspoint until a new strobe, so partial updates do not glitch.
Do not exceed the absolute maximum analog signal rating; over-voltage on X/Y pins can latch-up the ISO-CMOS switches even though the dielectric isolation improves robustness. Do not leave address inputs floating; tie unused address lines to GND via 10 kohm pull-downs. Always issue a RESET pulse at power-up to clear any random latch state that may select an unwanted crosspoint at startup.
Información de cumplimiento
Pb-Free / RoHS compliant per distributor product page (DigiKey 4309764, Mouser). AEC-Q100 not applicable - telecom/industrial part, not automotive qualified. REACH and halogen-free status not explicitly stated in provided data.
