74VHC165FT ,74VHC CMOS logic IC seriesFunctional Description• 8-Bit Shift Register (P-IN, S-OUT)2. 2. General General2. 2. General Genera ..
74VHC165FT ,74VHC CMOS logic IC seriesabsolute maximum ratings, even briefly, lead to deterioration in IC performance or evendestruction. ..
74VHC174 ,HEX D-TYPE FLIP FLOP WITH CLEAR74VHC174HEX D-TYPE FLIP FLOP WITH CLEAR
74VHC165FT
74VHC CMOS logic IC series
74VHC165FT
CMOS Digital Integrated Circuits Silicon Monolithic
74VHC165FT74VHC165FT74VHC165FT74VHC165FT
1. 1. 1. 1. Functional DescriptionFunctional DescriptionFunctional DescriptionFunctional Description 8-Bit Shift Register (P-IN, S-OUT)
2. 2. 2. 2. GeneralGeneralGeneralGeneral
The 74VHC165FT is an advanced high speed CMOS 8-BIT PARALLEL/SERIAL-IN, SERIAL-OUT SHIFT
REGISTER fabricated with silicon gate C2MOS technology.
It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS
low power dissipation.
It consists of parallel-in or serial-in, serial-out 8-bit shift register with a gated clock input. When the SHIFT/
LOAD input is held high, the serial data input is enabled and the eight frip-frops perform serial shifting with
each clock pulse.
When the SHIFT/LOAD input is held low, the parallel data is loaded synchronously into the register at positive
going transition of the clock pulse.
The CK-INH input should be shifted high only when the CK input is held high.
An Input protection circuit ensures that 0 to 5.5 V can be applied to the input pins without regard to the supply
voltage. This device can be used to interface 5 V to 3 V systems and on two supply systems such as battery back
up. This circuit prevents device destruction due to mismatched supply and input voltages.
3. 3. 3. 3. FeaturesFeaturesFeaturesFeatures
(1) High speed: fMAX = 150 MHz (typ.) at VCC = 5 V
(2) Low power dissipation: ICC = 4 µA (max) at Ta = 25
(3) High noise immunity: VNIH = VNIL = 28 % VCC (min)
(4) Power-down protection is provided on all inputs.
(5) Balanced propagation delays: tPLH ≈ tPHL
(6) Wide operating voltage range: VCC(opr) = 2 V to 5.5 V
(7) Pin and function compatible with 74 series (74AC/HC/AHC etc.) 165 type.
4. 4. 4. 4. PackagingPackagingPackagingPackaging
