Texas Instruments TPS3896ADRYT

Overview

TPS3896ADRYT from Texas Instruments is an ultra-small, single-channel, adjustable-voltage supervisor IC with active-low enable and push-pull output. It monitors supply rails ≥500 mV using an external resistor divider, provides 1% threshold accuracy over –40°C to 125°C, supports capacitor-adjustable delay (40 µs to 190 ms), and draws only 6 µA typical quiescent current. It is used for power-on reset and supply monitoring in FPGA, microcontroller, and ASIC power sequencing.

For engineers reviewing the TPS3896ADRYT datasheet, TPS3896ADRYT pinout, TPS3896ADRYT application, or TPS3896ADRYT equivalent, key selection criteria include its active-low ENABLE logic, push-pull SENSE_OUT output rated to VCC, 0.5 V internal reference enabling sub-1 V threshold configuration, and USON-6 (1.45 mm × 1.00 mm) package for space-constrained embedded systems.

Technical Context

The TPS3896ADRYT implements a precision comparator with 0.5 V internal reference and 5 mV hysteresis to detect rising/falling voltage thresholds on the SENSE pin. Its ENABLE pin is active-low and directly controls output assertion without propagation delay dependency on SENSE state.

Delay timing is set by an external capacitor on the CT pin, charged by a 310 nA current source to a 1.238 V threshold; delay = [C_CT (µF) × 4] + 40 µs. The push-pull output drives high to VCC and low to ≤0.3 V at 0.5 mA sink, eliminating need for external pull-up resistors.

Key Specifications

Pinout & Package

TPS3896ADRYT is housed in a 6-pin USON (DRY) package measuring 1.45 mm × 1.00 mm × 0.5 mm, optimized for ultra-dense portable and wearable designs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage supervisor applications.

Compared with TPS3896PDRYT, the TPS3896ADRYT offers field-tunable delay for system-specific power sequencing, while MAX6896TTA+T trades adjustability and temperature range for vendor ecosystem alignment - making TPS3896ADRYT optimal for new designs requiring flexibility and robustness.

Availability

TPS3896ADRYT is available at Aetrix Electronics and suitable for FPGA configuration monitoring, microcontroller power sequencing, and battery-powered sensor node applications requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance.

Supply support for TPS3896ADRYT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader delivering analog and embedded processing solutions, with decades of expertise in precision power management and supervisory ICs.

The TPS389x family was designed specifically for space-constrained, low-power embedded systems requiring accurate, configurable voltage monitoring - targeting portable electronics, industrial automation, and automotive infotainment subsystems.

FAQ

What is the minimum detectable supply voltage for TPS3896ADRYT?

The TPS3896ADRYT has a fixed 0.5 V internal reference, enabling detection of supply voltages as low as 500 mV when configured with an external resistor divider. For example, a 100 kΩ/100 kΩ divider on a 1.0 V rail delivers 0.5 V to SENSE - allowing precise monitoring of sub-1 V core supplies common in modern SoCs. This capability is confirmed in the Electrical Characteristics table (V_IT+ = 0.495–0.505 V).

Does TPS3896ADRYT require an external pull-up resistor on SENSE_OUT?

No, TPS3896ADRYT does not require an external pull-up resistor because it features a push-pull output stage. The SENSE_OUT pin actively drives high to VCC and low to ≤0.3 V at 0.5 mA sink current, as specified in the Electrical Characteristics table (V_OH = 0.8×V_CC, V_OL ≤ 0.3 V). This eliminates BOM cost and PCB area associated with pull-up resistors - a key differentiator from open-drain alternatives like TPS3898ADRYT.

How is the delay time calculated for TPS3896ADRYT using the CT pin?

The delay time for TPS3896ADRYT is calculated using the formula t_pd(r) = [C_CT (µF) × 4] + 40 µs, where C_CT is the capacitance connected between CT and GND. For instance, a 22 nF capacitor yields 40 µs + (0.022 × 4) µs = 40.088 µs, while 47 nF gives 40.188 µs. This relationship is derived from the 310 nA internal current source charging the capacitor to 1.238 V, and is validated in Figure 6 of the SBVS172B datasheet.

What is the operating temperature range of TPS3896ADRYT?

The TPS3896ADRYT is fully specified over an operating junction temperature range of –40°C to 125°C, as stated in the Recommended Operating Conditions table and Device Information section. This extended range supports deployment in harsh environments such as automotive engine compartments, industrial motor drives, and outdoor telecom equipment - unlike commercial-grade supervisors limited to 0°C–70°C or industrial-grade parts rated to 105°C.

Is TPS3896ADRYT pin-compatible with MAX6896?

Yes, TPS3896ADRYT is pin-for-pin compatible with MAX6896 devices, as explicitly stated in the Features section of the SBVS172B datasheet ("Pin-for-Pin Compatible With MAX6895/6/7/8"). Both use identical USON-6 (DRY) packaging and matching pin assignments for ENABLE, GND, SENSE, SENSE_OUT, CT, and VCC - enabling drop-in replacement in existing layouts, though electrical differences (e.g., reference voltage, delay architecture) must be verified per application.