Analog Devices Inc. LTC6994HS6-2#TRPBF

Overview

LTC6994HS6-2#TRPBF from Analog Devices is a programmable dual-edge delay block in the TimerBlox family, delivering 1µs–33.6s input-to-output delay with ±2.3% max error (for delays >512µs), CMOS output sourcing/sinking 20mA, and operation from –40°C to 125°C in a 6-lead TSOT-23 package. It delays both rising and falling edges and supports output inversion via DIV pin programming - used in switch debouncing, noise discrimination, and high-vibration timing-critical systems.

For engineers reviewing the LTC6994HS6-2#TRPBF datasheet, LTC6994HS6-2#TRPBF pinout, LTC6994HS6-2#TRPBF application, or LTC6994HS6-2#TRPBF equivalent, key selection factors include guaranteed automotive-grade temperature range (–40°C to 125°C), dynamic delay adjustment via control voltage, low 70µA supply current at 10µs delay, and AEC-Q100 qualification for functional safety-critical timing paths.

Technical Context

The LTC6994HS6-2#TRPBF implements a master oscillator (t_MASTER = 1µs × R_SET/50kΩ) feeding an 8-step programmable divider (NDIV = 1, 8, 64, 512, 4096, 2¹⁵, 2¹⁸, 2²¹) to achieve its full delay range. Its internal 4-bit A/D converter on the DIV pin sets both NDIV and polarity (POL = 1 enables output inversion).

It features hysteresis on the IN pin (V_IH ≈ 0.7×V+, V_IL ≈ 0.3×V+), 500µs typical start-up time, and a regulated 1.00V SET pin reference (±30mV) enabling resistor-programmed delay with minimal V_SET drift impact. Delay jitter is as low as 0.03%P-P at NDIV = 4096.

Key Specifications

Pinout & Package

Package: 6-Lead Plastic TSOT-23 (0.95mm height), RoHS-compliant, lead-free finish (LTFCX marking). Exposed pad optional for thermal relief.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable delay applications.

Compared with MAX6816EUS+T and CD4098BE, the LTC6994HS6-2#TRPBF delivers 33-million-fold wider delay range, ±2.3% accuracy over automotive temperature, and integrated AEC-Q100 reliability - making it the sole choice for precision, programmable, and safety-aware timing in harsh environments.

Availability

LTC6994HS6-2#TRPBF is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and portable medical devices requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC6994HS6-2#TRPBF 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

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The TimerBlox family - including LTC6994HS6-2#TRPBF - was designed to replace discrete RC timers and microcontroller-based delays with pin-configurable, high-accuracy silicon timing blocks for space-constrained and reliability-critical systems.

FAQ

What is the maximum delay achievable with the LTC6994HS6-2#TRPBF?

The LTC6994HS6-2#TRPBF supports a maximum delay of 33.6 seconds, achieved when NDIV = 2²¹ (2,097,152) and R_SET = 800kΩ. This is confirmed in the Electrical Characteristics table (t_DELAY MAX = 33.55 sec) and Figure 2 of the datasheet, which plots the full delay range versus DIVCODE. The value is derived from t_DELAY = NDIV × R_SET / 50kΩ × 1µs.

Does the LTC6994HS6-2#TRPBF support output inversion, and how is it configured?

Yes, the LTC6994HS6-2#TRPBF supports output inversion via the POL bit (MSB of DIVCODE). When DIVCODE = 8–15 (VDIV/V+ ≥ 0.53125), POL = 1 activates inversion - verified in Table 1 and the "LTC6994-2 Functionality" section. This is exclusive to the -2 variant; the -1 version uses POL only for edge selection. No external components are needed - inversion is purely pin-programmed.

What is the supply current of the LTC6994HS6-2#TRPBF at 2.25V and 10µs delay?

At V+ = 2.25V and 10µs delay (R_SET = 50kΩ, NDIV = 1), the LTC6994HS6-2#TRPBF draws 70µA typical supply current, as specified in the Electrical Characteristics table under "IS(IDLE)" for RL = ∞, RSET = 50k, NDIV ≤ 64. This value is measured at TA = 25°C and applies across the full –40°C to 125°C range per the "l" symbol denoting full-temperature specs.

Is the LTC6994HS6-2#TRPBF qualified for automotive applications?

Yes, the LTC6994HS6-2#TRPBF is AEC-Q100 qualified for automotive applications (Grade H, –40°C to 125°C), explicitly stated in the FEATURES list and ORDER INFORMATION table. Its part number suffix "HS6" denotes the high-temp grade, and the datasheet confirms qualification under "AEC-Q100 Qualified for Automotive Applications" - making it suitable for under-hood and chassis control modules.

How does the LTC6994HS6-2#TRPBF differ from the LTC6994HS6-1#TRPBF?

The LTC6994HS6-2#TRPBF delays both rising and falling edges and supports output inversion via the DIV pin's POL bit; the LTC6994HS6-1#TRPBF delays only one edge (rising or falling, selected by POL). This functional distinction is defined in the "DEVICE DELAY FUNCTION" diagram and "LTC6994-2 Functionality" section - the -2 variant is required for applications needing symmetrical edge delay or programmable polarity.