MIL-M-38510-25 Microcircuits, Digital, Bipolar, Ttl, Low Power, Counters, Monolithic SiliconThis specification covers the detail requirements for monolithic silicon, Schottky TTL, binary and decade counters. Two product assurance classes and a choice of case outlines and lead finishes are provided for each type and are reflected in the complete part number. For this product, the requirements of MIL-M-38510 have been superseded by MIL-PRF-38535, see 6.4.

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MIL-M-38510/25E

NOTES:

1. The pulse generator has the following characteristics: PRR ≤ 1 MHz, ZOUT = 50 Ω, duty cycle = 50%.

2. CL includes probe and jig capacitance.

3. All diodes are 1N3064, or equivalent.

4. Count up and count down pulse shown are for device type 03.

5. Waveforms for outputs QA, QB, and QC are omitted to simplify the drawing.

6. tr and tf ≤ 25 ns

FIGURE 5B. Switching test circuits and waveforms for device type 03 - Continued.