Product Summary

The 7556IPD is a CMOS timer providing significantly improved performance over the standard NE/SE555 timer, while at the same time being a direct replacement for those devices in most applications. Improved parameters include low supply current, wide operating supply voltage range, low THRESHOLD, TRIGGER, and RESET currents, no crowbarring of the supply current during output transitions, higher frequency performance and no requirement to decouple CONTROL VOLTAGE for stable operation. The applications of the 7556IPD include Precision timing, Pulse generation, Sequential timing, Time delay generation, Pulse width modulation, Pulse position modulation and Missing pulse detector.

Parametrics

7556IPD absolute maximum ratings: (1)VDD, Supply voltage: +18 V; (2)VTRIG, Trigger input voltage: -0.3 to VDD+0.3V; (3)VCV, Control voltage: -0.3 to VDD+0.3V; (4)VTH, Threshold input voltage: -0.3 to VDD+0.3V; (5)VRST, RESET input voltage: -0.3 to VDD+0.3V; (6)IOUT, Output current: 100 mA; (7)PDMAX, Maximum power dissipation, TA = 25℃: 1160 mW; (8)TSTG, Storage temperature range: -65 to +150℃; (9)TSOLD, Lead temperature (Soldering 60s): 300℃.

Features

7556IPD features: (1)Exact equivalent in most applications for NE/SE555; (2)Low supply current: 80μA (typ); (3)Extremely low trigger, threshold, and reset currents: 20pA (typ); (4)High-speed operation: 500kHz guaranteed; (5)Wide operating supply voltage range guaranteed 3 to 16V over ful automotive temperatures; (6)Normal reset function; no crowbarring of supply during output transition; (7)Can be used with higher-impedance timing elements than the bipolar 555 for longer time constants; (8)Timing from microseconds through hours; (9)Operates in both astable and monostable modes; (10)Adjustable duty cycle; (11)High output source/sink driver can drive TTL/CMOS; (12)Typical temperature stability of 0.005%/℃ at 25℃; (13)Rail-to-rail outputs.

Diagrams

7556IPD block diagram

7556 BK001
7556 BK001

Alpha Wire

Multi-Conductor Cable 12AWG 7C UNSHLD

Data Sheet

Negotiable 
7556 BK199
7556 BK199

Alpha Wire

Multi-Conductor Cable 12AWG 7C UNSHLD

Data Sheet

Negotiable 
75561-1000
75561-1000

Molex

Power to the Board Dual blade power plu e power plug 80 amp

Data Sheet

0-775: $2.12
75561-1500
75561-1500

Molex

Power to the Board PDSR 80 AMP PLUG W/PEG

Data Sheet

0-128: $3.64
128-500: $2.99
75561-1501
75561-1501

Molex

Power to the Board PDSR 80 AMP PLUG W/PEG

Data Sheet

0-128: $3.64
128-500: $3.00
75561-1510
75561-1510

Molex

Power to the Board PDSR 40 AMP PLUG W/PEG

Data Sheet

0-1: $3.12
1-10: $2.81
10-100: $2.21
100-500: $1.82