PARALLEL OUTPUT IS REGISTERED; UNREGISTERED SERIAL OUTPUT AVAILABLE
Count Direction:
RIGHT
Family:
AHC/VHC/H/U/V
JESD-30 Code:
R-PDIP-T16
JESD-609 Code:
e4
Length:
19.305 mm
Load Capacitance (CL):
50 pF
Logic IC Type:
SERIAL IN PARALLEL OUT
Max Frequency@Nom-Sup:
95000000 Hz
Max I(ol):
0.008 A
Number of Bits:
8
Number of Functions:
1
Number of Terminals:
16
Operating Temperature-Max:
125 °C
Operating Temperature-Min:
-40 °C
Output Polarity:
TRUE
Package Body Material:
PLASTIC/EPOXY
Package Code:
DIP
Package Equivalence Code:
DIP16,.3
Package Shape:
RECTANGULAR
Package Style:
IN-LINE
Packing Method:
TUBE
Power Supply Current-Max (ICC):
0.04 mA
Propagation Delay (tpd):
13.9 ns
Qualification Status:
Not Qualified
Schmitt Trigger:
NO
Seated Height-Max:
5.08 mm
Supply Voltage-Max (Vsup):
5.5 V
Supply Voltage-Min (Vsup):
2 V
Supply Voltage-Nom (Vsup):
3.3 V
Surface Mount:
NO
Technology:
CMOS
Temperature Grade:
AUTOMOTIVE
Terminal Finish:
Nickel/Palladium/Gold (Ni/Pd/Au)
Terminal Form:
THROUGH-HOLE
Terminal Pitch:
2.54 mm
Terminal Position:
DUAL
Trigger Type:
POSITIVE EDGE
Width:
7.62 mm
fmax-Min:
115 MHz
SN74AHC594N Frequently Asked Questions (FAQs)
The maximum clock frequency for the SN74AHC594N is 100 MHz, but this can vary depending on the operating conditions and the quality of the clock signal. It's recommended to check the timing characteristics in the datasheet and perform simulations or testing to ensure reliable operation at high frequencies.
To ensure proper initialization, it's recommended to tie the SRCLR (shift register clear) pin to VCC through a pull-up resistor. This will ensure that the shift register is cleared on power-up. Additionally, you can use an external reset signal to clear the shift register during normal operation.
The SN74AHC594N is a 3.3V device, but it is 5V tolerant on its inputs. This means you can use it with a 5V microcontroller, but you'll need to ensure that the output voltage from the microcontroller is within the recommended input voltage range of the shift register (typically 0.8V to 3.6V). You may also need to use level shifters or voltage dividers to ensure proper signal levels.
The SN74AHC594N has a latency of 2 clock cycles when shifting data in or out. This means that when you write data to the shift register, it will take 2 clock cycles for the data to appear at the output. Similarly, when reading data from the shift register, you'll need to account for the 2-clock-cycle latency. You can use a clock enable signal or a delay in your microcontroller code to accommodate this latency.
Yes, you can use multiple SN74AHC594N devices in a daisy-chain configuration to increase the number of output bits. To do this, connect the QH' (output) pin of one device to the SER (serial input) pin of the next device. Make sure to tie the SRCLR pin of each device to VCC through a pull-up resistor to ensure proper initialization.
Trust Checks
This model has been provided by community users.
Community Provided
This model has been verified by system checks.
System Verified
This model has been reviewed by community users.
Community Approved
Sponsored
SN74AHC594N Overview
Use the download button to access the SN74AHC594N schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like SN74A,
or try a keyword search, such as Shift Registers
About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
