CD74AC112E Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
CD74AC112E is a dual JK-type flip-flop in the advanced CMOS AC family, clocking at up to 71 MHz from a 1.5 V to 5.5 V supply with 24 mA output drive in a 16-pin PDIP package.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- CD74AC112E Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4684(MOQ 1)
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of CD74AC112E?
- 71 MHz maximum clock frequency in AC CMOS technology, significantly faster than HC-family JK flip-flops at the same supply
- Wide supply range of 1.5 V to 5.5 V enables mixed-voltage system designs from 1.8 V through 5 V logic rails
- 24 mA output sink current in 16-pin PDIP for direct drive of multiple TTL or CMOS loads without buffer stages
What is CD74AC112E used for?
CD74AC112E is used in high-speed digital frequency dividers, synchronous state machines, and edge-triggered latching circuits operating at clock frequencies up to 71 MHz. Its 1.5 V to 5.5 V supply range makes it compatible with both legacy 5 V TTL-level systems and modern 1.8 V or 3.3 V microprocessor I/O, bridging voltage domains in mixed-signal boards. The 16-pin DIP package is commonly chosen for university laboratory prototyping and industrial PLC I/O cards where through-hole assembly and easy socketing are preferred.
What are the specifications of CD74AC112E?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Family | AC |
| JESD-30 Code | R-PDIP-T16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | J-K FLIP-FLOP |
| Max Frequency@Nom-Sup | 71000000Hz |
| Max I(ol) | 0.024A |
| Number of Functions | 2 |
| Output Polarity | COMPLEMENTARY |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 0.08mA |
| Prop. Delay@Nom-Sup | 11.1ns |
| Propagation Delay (tpd) | 129ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | NO |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Trigger Type | NEGATIVE EDGE |
| fmax-Min | 100MHz |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia, Mexico |
Where can I find the CD74AC112E datasheet?
CD74AC112E Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74AC112E?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does CD74AC112E's 71 MHz clock frequency compare to HC-family JK flip-flops in a high-speed prescaler design?
CD74AC112E in the AC CMOS family achieves 71 MHz maximum clock rate versus approximately 20 MHz for HC-family equivalents such as CD74HC107 at the same 5 V supply and 50 pF load. This 3.5× speed advantage allows CD74AC112E to divide frequencies above 50 MHz in RF prescaler and clock distribution circuits, covering the 24 mA output current needed to drive cascaded flip-flop stages directly without additional line buffers.
Can CD74AC112E interface directly with 3.3 V microcontroller outputs while powered from a 5 V rail?
Yes, CD74AC112E accepts input voltages from 0 V up to VCC on its J, K, and CLK pins. When powered at 5 V, the AC-family input threshold is approximately 1.5 V for logic low and 3.5 V for logic high, so a 3.3 V CMOS microcontroller output driving a high of 3.3 V is safely interpreted as logic high. This eliminates the need for level-shift resistors in mixed 3.3 V / 5 V designs, saving BOM cost across 2-element JK flip-flop logic stages.
For a through-hole board requiring socketed logic replacement, why is the 16-pin PDIP of CD74AC112E advantageous over SOIC?
The 16-pin PDIP of CD74AC112E fits standard 0.6-inch IC sockets with 2.54 mm pin pitch, allowing field replacement of the dual JK flip-flop without soldering in industrial equipment with long service lifetimes. SOIC packages require hot-air rework stations to unsolder, which is impractical for field technicians. At 1.5 V to 5.5 V supply and 71 MHz, the socketed PDIP version provides identical electrical performance to surface-mount alternatives while simplifying maintenance on relay logic and PLC motherboards.
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Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.6700 | $0.67 |
| 10+ | $0.6330 | $6.33 |
| 1000+ | $0.6271 | $627.10 |
| 10000+ | $0.5591 | $5591.00 |
| 100000+ | $0.4684 | $46840.00 |
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