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SN74HC393DR

Name: SN74HC393DR
Rating: 4.7 (12 reviews)

IC BINARY COUNTR DL 4BIT 14SOIC

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規格

Series	74HC
Part Status	Active
Logic Type	Binary Counter
Direction	Up
Number of Elements	2
Number of Bits per Element	4
Reset	Asynchronous
Count Rate	36 MHz
Trigger Type	Negative Edge
Voltage - Supply	2 V ~ 6 V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	14-SOIC (0.154", 3.90mm Width)
Supplier Device Package	14-SOIC
Base Product Number	74HC393

概述

Description

SN74HC393DR is a TI 74HC dual 4-bit binary ripple counter. It contains two independent 4-bit counters that count on rising edges of their clock inputs. Each counter has an asynchronous clear input to reset its 4 bits to zero. A ripple carry output (RCO) allows cascading counters to build larger counters. Outputs for each counter are Q0–Q3, reflecting the current count. The device is suitable for clock division, timing and event-counting tasks, and simple digital counters in a wide range of circuits. It operates from a CMOS-compatible supply (2 V to 6 V; typical 4.5–5.5 V). Inputs are CMOS compatible and the device is relatively fast for a 4-bit counter. The SN74HC393DR suffix indicates a specific packaging: a 14-pin surface-mount package (DR usually denotes the SOIC/tape-and-reel variant in TI’s naming). In short: a compact, dual 4-bit counter ideal for cascading for larger counts, clock division, and timing apps in 5 V logic systems.

Features

SN74HC393DR features (concise):
- Dual 4-bit binary counters
- Up/down counting mode
- Parallel-load (preset) inputs and load control
- Asynchronous clear (reset)
- Ripple/carry output for cascading counters
- Common clock input (for both counters) with Q0–Q3 outputs per counter
- 5V operation (HC family: typically 2V–6V supply range) and CMOS logic
- Low power, high-speed operation
- 16-pin package (DR = D-IL/SOIC style)
Note: Check the datasheet for exact pinout and timing, but these are the core features of the SN74HC393DR.

Package

SOIC-14 (14-pin Small-Outline IC) in tape-and-reel packaging (DR suffix indicates SOIC with tape/reel).

Pinout

- Pin count: 14 pins (D/SOIC 14-pin package).
- Function: Dual 4-bit binary ripple counter with independent clocks and asynchronous clears (two 4-bit counters with outputs Q0–Q3 each; includes a ripple/cascade capability).

Manufacturer

- Manufacturer: Texas Instruments (TI).
- What kind of company: An American multinational corporation that designs and manufactures semiconductor devices and integrated circuits.

Application

SN74HC393DR is a dual 4‑bit binary ripple counter with asynchronous clear and ripple carry out. Applications include:
- Frequency division and timing circuits (divide-by-N)
- Pulse/event counting and modulo-N counters
- Cascading to build wider counters for longer timing intervals
- Simple sequencing and state-machine counters
- Timing bases for microcontrollers and digital clocks
- LED-display counting/ticking drivers

Equivalent

Equivalents to SN74HC393DR (dual 4-bit binary counter, 14-pin):
- MC74HC393 (Motorola)
- CD74HC393 (Philips/NXP)
- TC74HC393 (Toshiba)
- 74HC393 (other vendors in the 74HC family)
Optional: 74HCT393 (TTL-input variant; not always a drop-in—check voltage/timing).