CD74HCT164M96E4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
CD74HCT164M96E4 is an 8-bit serial-in parallel-out shift register from Texas Instruments in the HCT logic family, operating at up to 18 MHz with a 50 pF load capacity and a 14-pin SOIC tape-and-reel package for serial-to-parallel data expansion in 5 V TTL-compatible systems. From $0.35 in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- CD74HCT164M96E4 Datasheet PDF
- Category
- Integrated Circuit
- 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 CD74HCT164M96E4?
- 8-bit serial-in parallel-out architecture converting a single serial data stream to 8 parallel outputs, reducing microcontroller I/O pin count by 7 pins per register stage
- HCT logic family ensuring 5 V TTL-compatible input thresholds for direct interfacing with legacy 5 V microcontrollers and processors without level shifting
- 18 MHz maximum clock frequency with 50 pF load capacitance supporting fast serial communication in LED matrix, keypad, and LCD segment drive applications
- Asynchronous master reset (MR) input enabling immediate all-bits-clear without clock cycles, useful for system startup initialization and fault recovery sequences
- 14-pin SOIC tape-and-reel (M96) packaging compatible with automated SMT pick-and-place for high-volume consumer and industrial production runs
What is CD74HCT164M96E4 used for?
CD74HCT164M96E4 is widely used to expand the I/O capability of microcontrollers in LED display drivers, 7-segment digit multiplexers, and LCD segment control circuits where 8 or more parallel outputs are needed but only 2–3 MCU pins are available for serial data and clock. It suits industrial control panel indicator arrays and relay driver boards where multiple output channels must be populated from a single SPI-like serial bus using cascadable 8-bit shift registers. The HCT family's 5 V TTL-compatible inputs also make it a straightforward interface to older embedded systems using 5 V CMOS or TTL bus logic.
What are the specifications of CD74HCT164M96E4?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Count Direction | RIGHT |
| Family | HCT |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | SERIAL IN PARALLEL OUT |
| Max Frequency@Nom-Sup | 18000000Hz |
| Max I(ol) | 0.004A |
| Number of Bits | 8 |
| Number of Functions | 1 |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.16mA |
| Prop. Delay@Nom-Sup | 45ns |
| Propagation Delay (tpd) | 54ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | NO |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Trigger Type | POSITIVE EDGE |
| fmax-Min | 18MHz |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.60 |
Where can I find the CD74HCT164M96E4 datasheet?
CD74HCT164M96E4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74HCT164M96E4?
Compatible alternatives and drop-in replacements for CD74HCT164M96E4:
8-Bit, Right Direction, True Output, CMOS, PDSO14
Serial In Parallel Out, HCT Series, 8-Bit, Right Direction, True Output, CMOS, PDSO14
Frequently Asked Questions
How does cascading multiple CD74HCT164M96E4 devices expand parallel output count for a large LED matrix?
CD74HCT164M96E4 can be cascaded by connecting the Q7 serial output of one device to the serial input (A or B) of the next, allowing any number of 8-bit stages to share a single clock and serial data line. Cascading 4 devices expands output to 32 parallel lines driven from just 2 MCU pins (data and clock), enabling an 8x32 LED matrix controller with no additional address decoding hardware and a serial update rate limited by the 18 MHz clock maximum.
What is the maximum operating frequency of CD74HCT164M96E4, and is it fast enough for a 1 Mbps SPI bus?
CD74HCT164M96E4 operates at a maximum clock frequency of 18 MHz with a 50 pF capacitive load, which is 18 times faster than a standard 1 Mbps SPI clock rate. Even with a cascaded chain of 4 devices (32 bits), a complete parallel output update completes in under 2 µs at 18 MHz, making it responsive enough for real-time display refresh at frame rates above 1000 Hz in LED multiplexing applications.
Why choose the HCT family variant of CD74HCT164M96E4 over an HC-family 74HC164 for a 5 V microcontroller design?
The HCT logic family uses TTL-compatible input thresholds (VIH minimum 2 V, VIL maximum 0.8 V), while the HC family requires CMOS-level inputs (VIH minimum 3.5 V at 5 V supply). When a 5 V microcontroller's output high level is only 4.0 V–4.5 V (typical totem-pole output under load), the HC variant may fail to recognize it reliably above temperature, whereas the HCT variant accepts inputs down to 2 V with guaranteed noise margin.
Does CD74HCT164M96E4 have an asynchronous reset, and how is it used during system startup?
CD74HCT164M96E4 includes an active-low asynchronous master reset (MR) pin that clears all 8 parallel outputs to logic 0 immediately, independent of the clock signal. During system startup, pulling MR low for at least 20 ns guarantees a known all-zero output state before the MCU begins clocking serial data, preventing random register states from momentarily driving unintended loads such as relay coils or LED segments during power-on initialization.
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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.
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