Texas Instruments SN74HC165/SN74HC165-Q1 8-Bit Shift Registers
Texas Instruments SN74HC165/SN74HC165-Q1 8-Bit Parallel-Load Shift Registers are registers that shift the data toward a serial (QH) output. Parallel-in access to each stage is provided by eight individual direct data (A-H) inputs that are enabled by a low level at the shift/load (SH/LD) input. The SN74HC165/SN74HC165-Q1 devices also feature a clock-inhibit (CLK INH) function and a complementary serial (QH) output.
Clocking is accomplished by a low-to-high clock (CLK) input transition while SH/LD is held high and CLK INH is held low. The functions of CLK and CLK INH are interchangeable. Because a low CLK and a low-to-high transition of CLK INH also accomplish clocking, CLK INH must be changed to the high level only while CLK is high. When SH/LD is held high, parallel loading is inhibited. While SH/LD is low, the parallel inputs to the register are enabled independently of the levels of the CLK, CLK INH, or serial (SER) inputs. The SN74HC165-EP devices have gold bond wires, a temperature range of –55 to +105°C, and an SnPb lead finish. The Texas Instruments SN74HC165-Q1 devices are AEC-Q100 qualified for automotive applications.
Features
- Wide operating voltage range of 2V to 6V
- Outputs can drive up to ten LSTTL loads
- Low power consumption, 80µA maximum ICC
- Typical tpd = 13ns
- ±4mA output drive at 5V
- A low input current of 1µA maximum
- Complementary outputs
- Direct overriding load (data) inputs
- Gated clock inputs
- Parallel-to-serial data conversion
Applications
- Programable logic controllers
- Appliances
- Video display systems
- Output expander
- Keyboards
Functional Block Diagram
Related Development Tool
Texas Instruments 14-24-LOGIC-EVM Logic Evaluation Module (EVM)
Generic evaluation module developed to support any TI logic leaded device in a 14 to 24 pin count.