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SN74HC164N datasheet, circuit diagram, pinout, pdf

Explore the comprehensive Reference manual for the SN74HC164N, including the detailed circuit diagram, pinout, and Arduino integration. Compare SN74HC164N vs SN74HC595 for your project needs. Access the SN74HC164N PDF for all specifications.

Brands: Texas Instruments

Download: SN74HC164N Datasheet PDF

Price: inquiry

In Stock: 9,307

Logic Type: Shift Register

Output Type: Push-Pull

Number of Elements: 1

Package: 14-DIP (0.300, 7.62mm)

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74HC164N RAIN DROPS CHASER

SN74HC164N Pinout

The SN74HC164N is an 8-bit serial-in, parallel-out shift register IC commonly used in digital circuits for data expansion and display driving. It features dual gated serial data inputs (A and B), a common clock (CLK), and asynchronous clear (CLR) for resetting all outputs. This pinout table provides a detailed reference for all 14 pins of the SN74HC164N, helping ensure proper connectivity in electronic designs.

Pin No.	Name	I/O	Description
1	A	I	Gated Serial Input 1
2	B	I	Gated Serial Input 2
3	QA	O	Parallel Output
4	QB	O	Parallel Output
5	QC	O	Parallel Output
6	QD	O	Parallel Output
7	GND	–	Ground
8	CLK	I	Clock
9	CLR	I	Clear 1 Active-Low
10	QE	O	Parallel Output
11	QF	O	Parallel Output
12	QG	O	Parallel Output
13	QH	O	Parallel Output
14	Vcc	—	Power

Understanding the SN74HC164N pin configuration is essential for successful implementation in shift register applications. With clearly labeled parallel outputs (QA to QH), power and ground connections, and control inputs, this IC enables efficient serial-to-parallel data conversion in microcontroller and logic-based systems.

SN74HC164N Circuit Diagram

The SN74HC164N is a high-speed 8-bit serial-in, parallel-out shift register ideal for reducing the number of GPIO pins required in applications like LED matrix driving. By using this IC as a deserializer, you can efficiently control multiple LEDs with minimal microcontroller I/O overhead.

To prevent LEDs from turning on before valid data or a proper clock signal is received, a sink MOSFET is incorporated into the design. This ensures accurate LED output and avoids unintended lighting during initialization or data shifting.

Design Requirements for SN74HC164N LED Applications

Clock Signal Integrity:

Make sure that the rising edge of the incoming clock complies with the conditions listed under the Recommended Operating Conditions in the datasheet.

Voltage Compliance:

Always confirm that both input and output voltages stay within the limits specified under the Absolute Maximum Ratings to avoid damage.

Input Thresholds:

Refer to the Recommended Operating Conditions section for detailed input voltage threshold levels.

Timing Parameters:

For precise signal timing and stable operation, refer to the Timing Requirements, TA = 25°C in the device datasheet.

Recommended Operating Conditions

Parameter	Description	SN74HC164	Unit
V_CC	Supply voltage	2 – 6	V
V_IH	High-level input voltage (V_CC = 2 V)	≥ 1.5	V
	High-level input voltage (V_CC = 4.5 V)	≥ 3.15	V
	High-level input voltage (V_CC = 6 V)	≥ 4.2	V
V_IL	Low-level input voltage (V_CC = 2 V)	≤ 0.5	V
	Low-level input voltage (V_CC = 4.5 V)	≤ 1.35	V
	Low-level input voltage (V_CC = 6 V)	≤ 1.8	V
V_I	Input voltage	0 to V_CC	V
V_O	Output voltage	0 to V_CC	V
Δt/ΔV	Input rise/fall time (V_CC = 2 V)	≤ 1000	ns
	Input rise/fall time (V_CC = 4.5 V)	≤ 500	ns
	Input rise/fall time (V_CC = 6 V)	≤ 400	ns
T_A	Operating free-air temperature	–40 to 125	°C

Absolute Maximum Ratings

Parameter	Description	MIN	MAX	UNITS
V_CC	Supply voltage	–0.5	7	V
I_IK	Input clamp current (V_I < 0 or V_I > V_CC)	–20	20	mA
I_OK	Output clamp current (V_O < 0 or V_O > V_CC)	–20	20	mA
I_O	Continuous output current (V_O = 0 to V_CC)	–25	25	mA
–	Continuous current through V_CC or GND		±50	mA
T_stg	Storage temperature	–65	150	°C

Timing Requirements, TA = 25°C

PARAMETER	DESCRIPTION	V_CC	MIN	MAX	UNIT
f_clock	Clock frequency	2 V		6	MHz
		4.5 V		31
		6 V		36
t_w	Pulse duration (CLR low)	2 V	100		ns
		4.5 V	20
		6 V	17
t_w	Pulse duration (CLK high or low)	2 V	80
		4.5 V	16
		6 V	14
t_su	Setup time before CLK↑ (Data)	2 V	100		ns
		4.5 V	20
		6 V	17
t_su	Setup time before CLK↑ (CLR inactive)	2 V	100
		4.5 V	20
		6 V	17
t_h	Hold time, data after CLK↑	2 V	5		ns
		4.5 V	5
		6 V	5

FAQ

1. Is the output current sufficient to drive LEDs directly?

Not directly for high-current LEDs. The SN74HC164N provides limited current (typically ±25 mA max per output), so external drivers or resistors are recommended.

2. What are typical applications of the SN74HC164N?

Common uses include LED matrix driving, key scanning, signal routing, and reducing microcontroller pin usage.

3. Is it TTL or CMOS compatible?

It is CMOS logic but compatible with TTL input levels, making it versatile for mixed-signal environments.