Analog Devices Inc./Maxim Integrated DS1135Z-25+T&R

Overview

DS1135Z-25+T&R from Maxim Integrated is a +5V, 3-channel all-silicon delay line with precise 25 ns per-output propagation delay (tPLH/tPHL), ±1.5 ns initial tolerance, and leading/trailing edge symmetry preservation. It operates across -40°C to +85°C, drives up to 10 LS loads per output, and is housed in an 8-pin SOIC (150-mil) package for high-speed timing alignment in digital test and instrumentation systems.

For engineers reviewing the DS1135Z-25+T&R datasheet, DS1135Z-25+T&R pinout, DS1135Z-25+T&R application, or DS1135Z-25+T&R equivalent, key selection criteria include guaranteed 25 ns delay accuracy over temperature/voltage, 2.5 ns max output rise/fall time, 5V supply compatibility, and direct replacement suitability for legacy DS1013/DS1035 designs requiring improved edge fidelity and silicon reliability.

Technical Context

The DS1135Z-25+T&R implements three independent buffered delay paths within a single monolithic silicon IC, each delivering identical 25 ns nominal delay with matched tPLH and tPHL characteristics. Its logic-level input/output architecture preserves input signal symmetry and supports TTL/CMOS-compatible thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V).

It features internal buffering optimized for driving 10 LS loads per output under 4.75–5.25 V supply conditions, with 100 ms power-up stabilization time and 10 pF typical input capacitance. No external components or configuration are required-delay value is fixed at manufacture.

Key Specifications

Pinout & Package

DS1135Z-25+T&R is packaged in an 8-pin SOIC (150-mil) with gull-wing leads, RoHS-compliant (indicated by "+" suffix), and qualified for vapor phase, IR, and wave soldering.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 3-channel fixed-delay line applications.

Compared with DS1135Z-20+T&R and DS1135Z-30+T&R, the DS1135Z-25+T&R provides the median delay value in the family - balancing timing headroom and propagation latency for general-purpose digital synchronization where 25 ns represents a common calibration point in ATE and logic analyzers.

Availability

DS1135Z-25+T&R is available at Aetrix Electronics and suitable for automated test equipment, digital logic timing calibration, and high-speed pulse generation requiring stable component supply, full RoHS compliance, and long-term industrial temperature support.

Supply support for DS1135Z-25+T&R 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

Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and timing ICs for industrial, communications, and computing applications.

The DS1135 series belongs to Maxim's high-speed silicon delay line product line, engineered to replace aging discrete or hybrid delay solutions with monolithic, temperature-stable, and edge-accurate timing elements for digital test and instrumentation.

FAQ

What is the guaranteed delay accuracy of DS1135Z-25+T&R over its full operating temperature range?

The DS1135Z-25+T&R guarantees ±2 ns delay variation (tPLH/tPHL) across -40°C to +85°C and 4.75–5.25 V supply, as specified in Table 1 of the datasheet. This includes both initial tolerance and temperature/voltage drift, ensuring predictable timing behavior in industrial environments without recalibration.

Is DS1135Z-25+T&R pin-compatible with the older DS1013 or DS1035 devices?

Yes - DS1135Z-25+T&R uses the same 8-pin SOIC (150-mil) footprint and identical pin assignment (IN1–IN3, OUT1–OUT3, VCC, GND) as DS1013 and DS1035. The DS1135Z-25+T&R is explicitly recommended as a replacement, requiring no PCB layout changes while delivering improved delay accuracy and edge symmetry.

Does DS1135Z-25+T&R require external configuration or programming to set its 25 ns delay?

No - DS1135Z-25+T&R is a fixed-delay device with the 25 ns value laser-trimmed during manufacturing. It requires no external resistors, capacitors, or digital configuration. Power applied to VCC and GND enables immediate operation with stable delays after 100 ms power-up time.

Can DS1135Z-25+T&R drive standard TTL loads directly?

Yes - each output of DS1135Z-25+T&R is rated to drive up to 10 LS-TTL loads (12 mA sink, -1 mA source), meeting standard TTL interface requirements. No external buffer stages are needed when interfacing with 74LS-series logic or similar fan-out targets.

What is the maximum input frequency supported by DS1135Z-25+T&R?

DS1135Z-25+T&R supports input pulse periods down to 2× the tap delay (i.e., minimum 50 ns period, or 20 MHz fundamental), per AC Electrical Characteristics. Input pulse width must be ≥100% of the 25 ns delay (≥25 ns), and rise/fall times must be ≤3.0 ns (20%–80%) to maintain specified delay accuracy.