Key Specifications
Delay Range
20 – 1000 ns
20 standard values; custom on request
Delay Tolerance
±2 ns or ±5%
Whichever is greater; total delay and per-tap
Rise Time
4 ns max
Schottky-buffered outputs; no ext. components needed
Supply Voltage
5 V
TTL/DTL compatible; Opt.H = HCMOS, Opt.F = fast TTL
Input Test Pulse
3.2 V
Pulse width ≥50 ns or 1.2× total delay; rise time 2.0 ns
Measurement Point
1.5 V threshold
Leading edge; Opt.T for trailing edge measurement
Temperature Grades
Standard
0 to +70°C
Default; commercial/industrial use
Opt.39 — Extended
−40 to +85°C
Industrial/automotive environments
Opt.ER — Military
−55 to +125°C
Aerospace, defense; military screening available
Product Line Overview
| Type | Package | Pins | Taps | Delay Range | Tap Spacing | Mount |
|---|---|---|---|---|---|---|
| A0805 / A0805AG | 8-pin DIP / 8-pin SM | 8 | 5 | 20–500 ns | TD ÷ 5 (equal) | Through-hole / SMD |
| SA0805 | 8-pin SIP | 8 | 5 | 20–500 ns | TD ÷ 5 (equal) | Through-hole |
| A1405 / A1405AG MOST POPULAR | 14-pin DIP / 14-pin SM | 14 | 5 | 20–1000 ns | TD ÷ 5 (equal) | Through-hole / SMD |
| SMA1405 POPULAR SM | 14-pin SO | 14 | 5 | 20–250 ns | TD ÷ 5 (equal) | SMD |
| A1410 / A1410AG | 14-pin DIP / 14-pin SM | 14 | 10 | 500–1000 ns | TD ÷ 10 (equal) | Through-hole / SMD |
Product Photos
Left to right: A1405 14-pin DIP · A0805AG 8-pin SM · A1410AG 14-pin SM · SA0805 8-pin SIP
Package Drawings & Pin Assignments
Package drawings and pin assignments from RCD Components published datasheet. All dimensions in inches [mm].
Test Conditions (@ 25°C, no output load)
All delay specifications are measured at 1.5 V on the leading edge with no load on any output tap. Specify Opt.T for trailing edge measurement. Input rise time is 2.0 ns (0.75 V to 2.4 V). Pulse spacing must be ≥2× pulse width. Output tap delays will increase when any capacitive load is present — RCD does not publish a load-vs-delay curve; contact RCD for load-dependent behavior in your application.
Standard Delay Values Available
Option Codes
| Option | Description |
|---|---|
| T | Trailing edge measurement design |
| F | Fast TTL compatible |
| H | HCMOS compatible |
| C | FACT compatible |
| A | Auto-insertable design (through-hole) |
| ER | −55 to +125°C extended temperature; military screening available |
| 39 | −40 to +85°C extended temperature |
| W | Lead-free termination (RoHS, 260°C compatible) |
| Q | Tin/Lead termination |
Engineering Note: Tighter tolerances and faster rise times are available on special order. Intermediate and extended range delay values are also available. Contact RCD Components for custom requirements.
Select your application requirements below. The selector will identify the correct RCD part number and flag any constraints.
Filter by Requirements
Select a part and delay value to visualize all tap output timings with nominal, minimum, and maximum delay bounds. All delays referenced to input leading edge at 1.5 V, no load, 25°C.
| Tap | Nominal Delay | Min Delay | Max Delay | Tolerance Applied | Estimated Tempco Shift |
|---|
Engineering estimate — not RCD characterized data: RCD does not publish a temperature drift curve for this series. The temperature shift column above uses a rough order-of-magnitude model based on general TTL/Schottky and LC delay line device physics. It is provided for preliminary planning only. For any temperature-sensitive application, characterize the actual part across your operating range or contact RCD Components for application support.
Enter your application timing requirements. The calculator identifies the nearest standard RCD part and shows the published tolerance. Temperature and load capacitance rows are rough engineering estimates only — RCD does not publish characterized data for these effects. Do not use estimated rows to make a final pass/fail determination. Verify with RCD or by characterizing the part in your application.
Application Parameters
Ask questions about the RCD A-series active delay lines. Answers are drawn from the published RCD Components datasheet specifications embedded in this tool. For questions beyond published specs, contact RCD directly.