NE556 Dual Timer

Name: NE556 Dual Timer
Brand: Texas Instruments

NE556

Texas Instrumentsic logic timer

The NE556 Dual Timer from Texas Instruments provides two independent timing circuits for astable and monostable operations, with TTL-compatible outputs.

Manufacturer datasheet

Buy · DigiKey Buy · Mouser Buy · Amazon

In stock

Specifications

Operating Voltage: 5V to 15V
Supply Current: ICC = 20mA (output low, no load), 30mA (output high, no load) (@ VCC = 15V)
Temperature Range: -40°C to +105°C
Package: D (SOIC, 14), N (PDIP, 14)

Pinout

Pin	Name	Functions	Notes
1	DISCH	GPIO	Open collector output to discharge timing capacitor.
2	THRES	GPIO	End of timing input. THRES > CONT sets output low and discharge low.
3	CONT	GPIO	Input to control comparator thresholds, allowing bypass capacitor connection.
4	RESET	GPIO	Active low reset input forces output and discharge low.
5	OUT	GPIO	High current timer output signal.
6	TRIG	GPIO	Start of timing input. TRIG < 1/2 CONT sets output high and discharge open.
7	GND	GND
8	TRIG	GPIO	Start of timing input. TRIG < 1/2 CONT sets output high and discharge open.
9	OUT	GPIO	High current timer output signal.
10	RESET	GPIO	Active low reset input forces output and discharge low.
11	CONT	GPIO	Input to control comparator thresholds, allowing bypass capacitor connection.
12	THRES	GPIO	End of timing input. THRES > CONT sets output low and discharge low.
13	DISCH	GPIO	Open collector output to discharge timing capacitor.
14	VCC	POWER

Interactive pinout

Highlight:

NE556

Click a pin to copy its name · tap a tag above to spotlight a bus.