The 74hc164d is a high speed silicon gate CMOS device that is pin compatible with low power Schottky TTL (LSTTL) devices. The 74hc164d is an 8-bit edge-triggered shift register that serially inputs data and then outputs it in parallel. Data is serially input through one of two inputs (DSA or DSB); either input can be used as a high level enable to control the data input of the other input. The two inputs are either connected together or the unused inputs are tied high and must not be left floating.
When the clock (CP) changes from low to high, the data is shifted to the right by one bit and input to Q0. Q0 is the logical AND of the two data inputs (DSA and DSB), which will hold the length of the setup time before rising the clock edge. .
A low level on the main reset (MR) input will disable all other inputs and simultaneously clear the registers asynchronously, forcing all outputs low.
74hc164d features:Gated serial data input.
Asynchronous central reset.
Meets JEDEC standard no. 7A.
Electrostatic discharge (ESD) protection:
HBM EIA/JESD22-A114-B exceeds 2000 V.
MM EIA/JESD22-A115-A exceeds 200 V.
A variety of package forms.
Rated from -40 °C to +85 °C and -40 °C to +125 °C.
74hc164d model identification and main parameters:
74hc164d pin diagram:
74hc164d pin information:
Pin Configuration for DIP14, SO14, SSOP14, and TSSOP14 Packages
74hc164d pin description:
74hc164d function table:
H = HIGH level
h = a low-to-high clock transition prior to a set-up TIme HIGH level
L = LOW level
l = LOW (low) level of set-up TIme before the low-to-high clock transition
q = lowercase letters represent the state of a referenced input that precedes the low-to-high clock transition
↑ = low-to-high clock transition
74hc164d limit value
Meets the requirements of the absolute maximum rating system (IEC 60134). The voltage reference point is GND (ground = 0 V).
[1] For DIP14 package: Ptot linearly drops at 12 mW/K over 70 °C.
[2] For SO14 packages: Ptot linearly drops at 8 mW/K over 70 °C.
For SSOP14 and TSSOP14 packages: Ptot linearly drops at 5.5 mW/K over 60 °C.
For the DHVQFN14 package: Ptot linearly drops at a speed of 4.5 mW/K over 60 °C.
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