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NTE1414 Integrated Circuit Digital AC Clock Timer for VCR
Description: The NTE1414 is an LSI integrated circuit in a 40-Lead DIP type package designed for AC INPUT clock timers capable of randomly setting "ON hour" and "OFF hour" by a unit of a minute. This device can also work as a stopwatch timing up to 1 hour, 59 minutes and 59 seconds, and as a sleep timer operating for not more than 1 hour and 59 minutes once it is set. A current hour, "ON hour", and "OFF hour" can be set easily in one of the following three modes: FAST mode, in which the data of figures of minutes are sent fast at 50Hz or 60Hz; SLOW mode, in which they are sent slow at 2Hz; and REVERSE, mode in which they are sent reversely. Features: D Complete Two-Operation/24 Hour Timer D Alternate Current of 50Hz/60Hz Entered D AM/PM or 24 Hour Display D Hours can be Set in FORWARD or REVERSE Mode D Sleep Timer Operation for not more than 1 Hour, 59 Minutes once it is Set D Stopwatch Timing up to 1 Hour, 59 Minutes, and 59 Seconds D Capable of Directly Driving a Fluorescent Lamp Tube D Power Failure Indicator Absolute Maximum Ratings: (VSS = 0, TA = +25C unless otherwise specified) Supply Voltage, VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -16 to +0.3V Input Voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -17 to +0.3V Output Voltage, VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -26 to +0.3V Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20 to +70C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 to +125C Recommended Operating Conditions: (TA = +25C unless otherwise specified)
Parameter Supply Voltage Supply Voltage Fall Detect Voltage Symbol VDD VPF Test Conditions VSS = 0 VSS = 0 Min -10 - Typ - - Max -15 -10 Unit V V
Electrical Characteristics: (VDD = -12V, VSS = 0, TA = +25C unless otherwise specified)
Parameter Supply Current 50Hz/60Hz Input Terminal Input Frequency High Level Input Voltage Low Level Input Voltage All Other Input Terminals High Level Input Voltage Low Level Input Voltage High Level Output Current Output Voltage Breakdown High Level Output Current Output Voltage Breakdown Other Display Output Terminals High Level Output Current Output Voltage Breakdown Other Output Terminals High Level Output Current Output Voltage Breakdown IOH (4) VO = -2V 500 - - - - -22 A V BVO (4) IO = -10A
Pin Connection Diagram
AM 10 Hrs - b & c Hrs - f Hrs - g Hrs - a Hrs - b Hrs - d Hrs - c Hrs - e 1 2 3 4 5 6 7 8 9 40 PM 39 1Hz Output 38 12/24 Select 37 Blanking 36 50/60 Select 35 50/60 Input 34 Forward/Reverse 33 Slow 32 Fast 31 MS 1 30 MS 2 29 MS 3 28 VSS 27 VDD 26 Timer OFF Input 25 Timer ON Input 24 Timer Output 23 Timer Output 22 Mins - c 21 Mins - a
Symbol IDD fi VIH (1) VIL (1) VIH (2) VIL (2) IOH (1)
Test Conditions No Load
Min - DC
Typ 1.3 50/60 - - - - 12 - 6 - 3 -
Max 5.0 10k -1 -16 -1 VDD - -22 - -22 - -22
Unit mA Hz V V V V mA V mA V mA V
VSS = 0 VSS = 0 VSS = 0 VSS = 0 VO = -3V
0 VDD+1 0 VDD+1 - - - - - -
PM Output Terminal (In 24 Hour Display Mode) BVO (1) IO = -10A IOH (2) VO = 3V
10's of Hour and 10's of Minute - Figure Display Output Terminal (b & c) (a & d) BVO (2) IO = -10A IOH (3) VO = -3V
BVO (3) IO = -10A
10 Mins - f 10 10 Mins - g 11 10 Mins - a & d 12 10 Mins - b 13 10 Mins - e 14 10 Mins - c 15 Mins - f 16 Mins - g 17 Mins - a 18 Mins - b 19 Mins - e 20
40
21
1 2.055 (52.2)
20 .550 (13.9) Max .155 (3.9)
.100 (2.54)
.019 (0.5)
.137 (3.5)
.650 (16.5)

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