Texas Instruments 5962-8852001CA

Overview

5962-8852001CA from Texas Instruments is a dual positive-edge-triggered D-type flip-flop in a 14-pin ceramic dual in-line package (CDIP-J), operating across −55°C to 125°C. It supports 2-V to 6-V V_CC, accepts input voltages up to 6 V, delivers ≤10 ns max propagation delay at 5 V, and features independent preset (PRE) and clear (CLR) inputs for asynchronous control - used in radiation-tolerant military timing and data synchronization circuits.

For engineers reviewing the 5962-8852001CA datasheet, 5962-8852001CA pinout, 5962-8852001CA application, or 5962-8852001CA equivalent, key selection criteria include its MIL-PRF-38535 Class V qualification, CDIP hermetic ceramic packaging, −55°C to 125°C extended temperature range, and compatibility with 5-V TTL/CMOS logic systems requiring deterministic edge-triggered state storage.

Technical Context

The 5962-8852001CA implements two independent D-type flip-flops, each with asynchronous active-low PRE and CLR inputs that override clocked operation. Its positive-edge clock triggering occurs at a defined voltage threshold-not dependent on clock rise time-ensuring robust timing behavior under varying slew rates.

Each flip-flop provides true (Q) and complementary (Q̅) outputs, with setup time as low as 3 ns and hold time of 0.5 ns at V_CC = 5 V. The device meets SN54AC74 specifications, including ±24 mA output drive capability, 140 MHz max clock frequency, and input transition rate tolerance of 8 ns/V.

Key Specifications

Pinout & Package

Ceramic Dual In-Line Package (CDIP-J), 14-pin, 0.3-inch body width, 5.08 mm max height, hermetically sealed with glass frit lid per MIL-STD-1835 GDIP1-T14.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual D-type flip-flop applications.

Compared with 5962-8852001CA, SNJ54AC74FK offers superior high-frequency performance due to lower parasitic inductance in LCCC, while SN54AC74W maintains identical pin compatibility but trades hermetic reliability for lower cost in non-radiation environments.

Availability

5962-8852001CA is available at Aetrix Electronics and suitable for avionics data synchronization, radiation-hardened telemetry, military radar pulse shaping, and secure crypto key latching requiring stable component supply across extended temperature and radiation exposure profiles.

Supply support for 5962-8852001CA 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 U.S.-based semiconductor manufacturer specializing in analog, embedded processing, and high-reliability components for industrial, automotive, aerospace, and defense markets.

The SN54AC74 product line delivers radiation-tolerant, high-speed CMOS logic for mission-critical timing and data capture in extreme environments - designed specifically for MIL-PRF-38535 Class V compliance and long-lifecycle deployment.

FAQ

What is the maximum clock frequency supported by the 5962-8852001CA?

The 5962-8852001CA supports a maximum clock frequency of 140 MHz at V_CC = 5 V and T_A = 25°C, as specified in the switching characteristics table. At full military temperature range (−55°C to 125°C), the guaranteed minimum clock frequency is 95 MHz. This performance enables use in high-speed digital control loops and real-time signal conditioning where deterministic edge alignment is essential. The 5962-8852001CA achieves this via optimized AC-series CMOS architecture with low internal capacitance and fast charge transfer.

Does the 5962-8852001CA require external pull-up or pull-down resistors on unused inputs?

Yes, all unused inputs of the 5962-8852001CA must be held at V_CC or GND to ensure proper device operation and prevent floating-node-induced current leakage or oscillation. This requirement is explicitly stated in Note 3 of the recommended operating conditions section. Leaving inputs unconnected risks increased ICC, unpredictable output states, or accelerated wear-out in high-reliability applications. The 5962-8852001CA's CMOS input structure has high impedance, making it especially sensitive to noise coupling when unterminated.

Is the 5962-8852001CA pin-compatible with commercial-grade SN74AC74 variants?

No, the 5962-8852001CA is not pin-compatible with commercial SN74AC74 variants such as SN74AC74N or SN74AC74DR. While both share identical logic functionality and 14-pin count, the 5962-8852001CA uses the CDIP-J package with through-hole spacing and hermetic ceramic construction, whereas commercial versions use plastic DIP (N), SOIC (D), or TSSOP (PW) packages with different pin pitch, body dimensions, and thermal characteristics. PCB layout and assembly processes are not interchangeable.

What is the absolute maximum supply voltage rating for the 5962-8852001CA?

The absolute maximum supply voltage rating for the 5962-8852001CA is −0.5 V to +7 V, as defined in the Absolute Maximum Ratings table. Operation beyond this range may cause permanent damage. The device is rated for recommended operation from 2 V to 6 V, with tested performance validated across that range. Exceeding 7 V risks oxide breakdown in internal transistors, while negative supply below −0.5 V can forward-bias protection diodes and induce latch-up. These limits apply regardless of duration or duty cycle - the 5962-8852001CA must never be exposed to transient spikes exceeding ±7 V.

How does the 5962-8852001CA handle simultaneous assertion of PRE and CLR inputs?

When both PRE and CLR are simultaneously asserted (low), the 5962-8852001CA enters an unstable output state where Q and Q̅ both go high - a forbidden condition per the Function Table footnote. This state does not persist: upon release of either PRE or CLR, the flip-flop resolves to the state dictated by the remaining active control signal. The 5962-8852001CA does not guarantee metastability recovery time in this scenario, so system design must avoid concurrent assertion using external gating logic or priority encoding. This behavior is inherent to the basic AC74 architecture and applies identically across all SN54AC74-family devices.