74HC166N,652 NXP

74HC166 74HCT166 8-bit parallel-in/serial out shift register Rev. 4 28 December 2015 Product data sheet 1. General description The 74HC166 74HCT166 is an 8-bit serial or parallel-in/serial-out shift register. The device features a serial data input (DS), eight parallel data inputs (D0 to D7) and a serial output (Q7). When the parallel enable input (PE) is LOW, the data from D0 to D7 is loaded into the shift register on the next LOW-to-HIGH transition of the clock input (CP). When PE is HIGH, data enters the register serially at DS with each LOW-to-HIGH transition of CP. When the clock enable input (CE) is LOW data is shifted on the LOW-to-HIGH transitions of CP. A HIGH on CE disables the CP input. Inputs include clamp diodes which enable the use of current limiting resistors to interface inputs to voltages in excess of V . CC 2. Features and benefits Synchronous parallel-to-serial applications Synchronous serial input for easy expansion Complies with JEDEC standard no. 7A Input levels: For 74HC166: CMOS level For 74HCT166: TTL level ESD protection: HBM JESD22-A114F exceeds 2000 V MM JESD22-A115-A exceeds 200 V Multiple package options Specified from 40 Cto+85 C and from 40 Cto+125 C 3. Ordering information Table 1. Ordering information Type number Package Temperature range Name Description Version 74HC166D 40 C to +125 C SO16 plastic small outline package 16 leads body width 3.9 mm SOT109-1 74HCT166D 74HC166DB 40 C to +125 C SSOP16 plastic shrink small outline package 16 leads body width SOT338-1 5.3 mm 74HCT166DB 74HC166PW 40 C to +125 C TSSOP16 plastic thin shrink small outline package 16 leads body SOT403-1 width 4.4 mm 74HC166 74HCT166 Nexperia 8-bit parallel-in/serial out shift register 4. Functional diagram 65* & 5 DDD DDD Fig 1. Logic symbol Fig 2. IEC logic symbol 3( 05 1 6(5, // (/ 5 / , 3 %,7 4 DDD Fig 3. Functional diagram 74HC HCT166 All information provided in this document is subject to legal disclaimers. Nexperia B.V. 2017. All rights reserved Product data sheet Rev. 4 28 December 2015 2 of 20 &( 6(5, / 287 6+,)7 5(*,67(5 &3 6 &( &3 05 4 0 6 3(