Tampons et répéteurs de signal
Produits (2)
PCA9616PW,118 - 3-Ch Differential I2C Bus Buffer | NXP
The NXP PCA9616PW,118 is a 3-channel multipoint Fast-mode Plus (Fm+) differential I2C-bus buffer with hot-swap logic, packaged in a 16-pin TSSOP (PW, SOT402-1) surface-mount housing. It operates at data rates up to 1 MHz, supports single-ended side supply of 2.3 V to 5.5 V and a differential side supply of 3.0 V to 5.5 V, and extends the I2C/SMBus beyond the normal single-ended limits. A differential I2C-bus (dI2C) buffer is a signal repeater/redriver that converts the conventional open-drain, single-ended SDA and SCL lines into robust differential signals for transmission over long cables or through electrically harsh environments. Within the signal-chain hierarchy, it belongs to interface ICs -> bus buffers/repeaters -> I2C-bus buffers, and it sits between single-ended SMBus/I2C hosts and devices located meters away. Key features include three independent differential channels for multipoint (multi-drop) bus topologies, automatic signal direction detection requiring no external direction-control signal, and hot-swap logic that isolates the live backplane from insertion transients. Cables can be extended to at least 3 m, or longer at reduced clock speeds, while remaining compatible with Standard-mode, Fast-mode, and Fast-mode Plus (up to 1 MHz) devices on the single-ended side. Architecturally, the PCA9616 pairs each single-ended side buffer with an internal differential driver/receiver pair, providing common-mode noise rejection that ordinary I2C repeaters cannot achieve in noisy industrial environments. The dual-supply design lets a 3.3 V differential domain connect to 5 V or mixed-voltage single-ended rails. Typical applications include backplane and rack-mounted card cages, industrial control networks in high-EMI areas, telecom chassis management (SMBus/PMBus domains), and LED signage or display clusters where I2C must traverse long ribbon or twisted-pair cable. For design, use twisted-pair or Cat-5 cable for each differential pair, and observe the differential-side supply requirement; hot-swap isolation makes the part suitable for live insertion. This page synthesizes distributor pricing, pinout guidance, drop-in alternative analysis, and design notes not found in the manufacturer datasheet alone.
SN65LVDS100DGKRG4 - 2Gbps LVDS Repeater | TI | VSSOP-8
The Texas Instruments SN65LVDS100DGKRG4 is a 2 Gbps LVDS/LVPECL/CML-to-LVDS differential repeater and translator in an 8-pin VSSOP (DGK) package. It regenerates high-speed differential signals with only 65 ps of total jitter, making it a clean-signal solution for long backplane or cable runs. A differential repeater is a signal-conditioning device placed in a high-speed serial link: it receives a degraded differential waveform, re-amplifies and re-times it through a receiver-driver pair, and launches a fresh LVDS signal onto the next segment. In the signal-integrity hierarchy it sits between a plain buffer and a full retimer, belonging to the broader family of interface ICs and signal buffers/repeaters. Key features include signaling rates up to 2 Gbps, low 100 ps maximum part-to-part skew, receiver input threshold hysteresis for noise rejection, and a wide input common-mode range that accepts LVDS, PECL, and CML signal levels. TI positions it as a low-power alternative to the MC100EP16 ECL repeater, offering significant static current savings in LVDS mode. The input receiver tolerates a broad common-mode range, so designers can AC-couple or DC-couple LVPECL and CML sources with simple biasing. The output drives a nominally 100-ohm differential transmission line with standard LVDS levels. The signal path is always-on: power is roughly the sum of receiver and driver currents, and the DGK package junction-to-ambient thermal resistance comfortably handles the sub-100 mW dissipation. Typical applications include clock distribution and fan-out in telecom line cards, redriving LVDS signals across backplanes and cable interconnects, and translating PECL or CML outputs to LVDS-compatible receivers in test instrumentation and imaging systems. For design, keep the 100-ohm differential impedance continuous through the device; place the part at the midpoint of lossy traces where the eye is still open enough to meet the receiver threshold. AC-coupled PECL inputs require appropriate bias resistors per the TI datasheet application section. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet.