74HCT594
8-BIT SHIFT REGISTER WITH 8-BIT OUTPUT REGISTER
Description
Pin Assignments
The 74HCT594 is a high speed CMOS device that is designed to be
pin compatable with 74LS low power Schottky types.
An eight bit shift register accepts data from the serial input (DS) on
each positive transition of the shift register clock (SHCP). When
asserted low the shift register reset function (SHR) sets all shift
register values to zero and is independent of all clocks. Also when
asserted low the storage register reset function (STR) sets all shift
register values to zero and is independent of all clocks
Data from the input serial shift register is placed in the output
register with a rising pulse on the storages resister clock (STCP).
The storage resister includes output Q7S which is used for
cascading information between devices. As the information moves
into the storage register, it is asserted on the push-pull outputs Q0Q7.
All registers capture data on rising edge and change output on the
falling edge. If both clocks are connected together, the input shift
register is always one clock cycle ahead of the output register.
Features
Applications
•
Wide Supply Voltage Range from 4.5V to 5.5V
•
General Purpose Logic
•
Sinks or sources 8mA at VCC = 4.5V
•
Serial to Parallel Data conversion
•
CMOS low power consumption
•
Capture and hold data for extended periods of time.
•
Schmitt Trigger Action at All Inputs
•
Allow simple serial bit streams from a microcontroller to
•
Inputs accept up to 6.0V
•
ESD Protection Tested per JESD 22
control as many peripheral lines as needed.
•
Wide array of products such as:
Exceeds 200-V Machine Model (A115-A)
o
Computer peripherals
Exceeds 2000-V Human Body Model (A114-A)
o
Appliances
Exceeds 1000-V Charged Device Model (C101C)
o
Industrial control
•
Latch-Up Exceeds 250mA per JESD 78, Class II
•
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
•
Halogen and Antimony Free. “Green” Device (Note 3)
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain
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