SN74HC393PWR
| Parameters | |
|---|---|
| Series | 74HC |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | 14-TSSOP (0.173", 4.40mm Width) |
| Mfr | Texas Instruments |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C |
| Direction | Down |
| Number of Elements | 2 |
| Supplier Device Package | 14-TSSOP |
| Number of Bits per Element | 4 |
| Reset | Asynchronous |
| Voltage - Supply | 2 V ~ 6 V |
| Count Rate | 36 MHz |
| Trigger Type | Negative Edge |
| Logic Type | Binary Counter |
| Timing | - |
| Package | Tape & Reel (TR) |
| Product Status | Active |
| Base Product Number | 74HC393 |
| REACH Status | REACH Unaffected |
| Standard Package | 2,000 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
SN74HC393PWR Counter IC Binary Counter 2 Element 4 Bit Negative Edge 14-TSSOP
The SN74HC393PWR is a TI dual 4-bit binary ripple counter belonging to the high-speed CMOS HC logic family, delivered in a 14-TSSOP surface-mount package. It integrates eight edge-triggered flip-flops and additional gating to implement two independent 4-bit counters inside a single 14-pin body, operating from a wide 2 V to 6 V supply across a -40 C to +85 C ambient range . Each counter section features its own clock input that triggers on the falling edge and an asynchronous direct-clear input, allowing the two sections to be cascaded or used separately to realize divide-by-256 counting, frequency division, or timing generation . With a typical propagation delay of 13 ns, a maximum quiescent current of 80 uA, and the ability to drive up to 10 LSTTL loads, the SN74HC393PWR is a compact, low-power timing building block for industrial, consumer, and instrumentation platforms that need reliable binary counting without a microcontroller.
Typical application scenarios for the SN74HC393PWR center on digital timing, frequency division, and event counting where a low-cost dedicated counter offloads the main processor. It is widely deployed in clock prescalers, baud-rate generators, timer/counter peripherals, digital delay lines, LED sequencer drivers, motor step generators, and address or word-line scanners for memory and display subsystems.
Alternative binary counter chips
1. SN74HC393DR: TI SOIC-14 tape-and-reel variant of the same dual 4-bit binary counter core, offering identical electrical performance for boards that prefer the wider 3.9 mm SOIC body.
2. MC74HC393ADR2G: onsemi NSOIC-14 twin of the 74HC393 function, operating from 2 V to 6 V with a 50 MHz clock rate, serving as a cross-vendor similar replacement that requires datasheet verification before drop-in use.
3. 74HC393D: Nexperia/Philips-origin SOIC-14 74HC393 compatible counter widely stocked in distribution, offering a familiar footprint and logic-compatible replacement for legacy designs.
4. CD74HC393M: TI/CD counterpart in SOIC-14 with a 35 MHz clock rate and 2 V to 6 V supply, suitable as a cost-effective similar alternative when the lower frequency rating is acceptable.
