NTE7445

NTE7445 Integrated Circuit TTL, BCD−toDecimal Decoder/Driver 16−Lead DIP Type Package Features: D Full Decoding of Input Logic D 80mA Sink−Current Capability D All Outputs are off for Invalid BCD Input Conditions Description: The NTE7445 is a monolithic BCD−to−decimal decoder/driver in a 16−Lead DIP type package consisting of eight inverters and ten four−input NAND gates. The inverters are connected in pairs to make BCD input data available for decoding by the NAND gates. Full decoding of valid BCD input logic ensures that all outputs remain off for all invalid binary input conditions. This decoder features TTL inputs and high−performance, NPN output transistors designed for use as an indicator/relay driver or as an open−collector logic−circuit driver. Each of the high−breakdown output transistors (30 volts) will sink up to 80 milliamperes of current. Each input is one normalized Series 74 load. Inputs and outputs are entirely compatible for use with TTL or DTL logic circuits, and the outputs are compatible for interfacing with most MOS integrated circuits. Power dissipation is typically 215 milliwatts. Absolute Maximum Ratings: (TA = 0 to +70C unless otherwise specified) Supply Voltage (Note 1), VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V Input Voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V Maximum Current Into Any Output (Off−State) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1mA Operating Ambient Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0C to +70C Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65C to +150C Note 1. Voltage values are with respect to network GND terminal. Recommended Operating Conditions: Parameter Supply Voltage Symbol Min VCC Off−State Output Voltage Operating Ambient Temperature TA Typ Max Unit 4.75 5.0 5.25 V − − 30 V 0 − 70 C Electrical Characteristics: (TA = 0 to +70C, Note 2 unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit High−Level Input Voltage VIH 2 − − V Low Level Input Voltage VIL − − 0.8 V Input Clamp Voltage VIK − − −1.5 V IO(on) = 80mA − 0.5 0.9 V IO(on) = 20mA − − 0.4 V VCC = Min, VIH = 2V, VIL − 800mV, VO(off) = 30V − − 250 A On−State Output Voltage VO(on) Off−State Output Current IO(off) VCC = Min, II = −12mA VCC = Min, VIH = 2V, VIL = 800mV Input Current at Max. Input Voltage II VCC = Max, VI = 5.5V − − 1 mA High−Level Input Current IIH VCC = Max, VI = 2.4V − − 40 A Low−Level Input Current IIL VCC = Max, VI = 0.4V − − Supply Current ICC VCC = Max, Note 3 − 43 −1.6 mA 70 mA Note 2. All typical values are at VCC = 5V, TA = +25C. For conditions shown as Min or Max, use the appropriate value specified under recommended operating conditions for the application type. Note 3. ICC is measured with all inputs grounded and outputs open. Switching Characteristics: (VCC = 5V, TA = +25C unless otherwise specified) Parameter Symbol Propagation Delay Time, Low−to−High Level Output tPLH Propagation Delay Time, High−to−Low Level Output tPHL Test Conditions Min Typ Max Unit CL = 15pF, RL = 100 − − 50 ns − − 50 ns Functional Table: Inputs Outputs D C B A 0 1 2 3 4 5 6 7 8 9 0 L L L L L H H H H H H H H H 1 L L L H H L H H H H H H H H 2 L L H L H H L H H H H H H H 3 L L H H H H H L H H H H H H 4 L H L L H H H H L H H H H H 5 L H L H H H H H H L H H H H 6 L H H L H H H H H H L H H H 7 L H H H H H H H H H H L H H 8 H L L L H H H H H H H H L H 9 H L L H H H H H H H H H H L H L H L H H H H H H H H H H H L H H H H H H H H H H H H H H L L H H H H H H H H H H H H L H H H H H H H H H H H H H H L H H H H H H H H H H H H H H H H H H H H H H H H INVALID No. H = High Level (Off), L = Low Level (On) Pin Connection Diagram Output 0 1 16 VCC Output 1 2 15 Input A Output 2 3 14 Input B Output 3 4 13 Input C Output 4 5 12 Input D Output 5 6 11 Output 9 Output 6 7 10 Output 8 GND 8 9 Output 7 16 9 1 8 .260 (6.6) Max .870 (22.0) Max .200 (5.08) Max .100 (2.54) .700 (17.78) .099 (2.5) Min