HD74HC4511 Datasheet | Hitachi Semiconductor

Description The HD74HC4511 provides the functions of a 4-bit storage latch, a BCD-to-seven-segment decoder, and an output driver. Lamp test (LT), blanking (BI), and latch enable (LE) inputs are used to test the display, to turn off or pulse-modulate the brightness of the display, and to store a BCD code, respectively. Features - - - - - High Speed Operation: tpd (A, B, C, D to a - g) = 31 ns typ (CL = 50 p F) High Output Current: Fanout of 10 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) Function Table Inputs LE X X L L L L L L L L L L L L L L L L H Note: BI X L H H H H H H H H H H H H H H H H H LT L H H H H H H H H H H H H H H H H H H D X X L L L L L L L L H H H H H H H H X C X X L L L L H H H H L L L L H H H H X B X X L L H H L L H H L L H H L L H H X A X X L H L H L H L H L H L H L H L H X Outputs a H L H L H H L H L H H H L L L L L L - 1 b H L H H H H H L L H H H L L L L L L c H L H H L H H H H H H H L L L L L L d H L H L H H L H H L H L L L L L L L e H L H L H L L L H L H L L L L L L L f H L H L L L H H H L H H L L L L L L g H L H L H H H H H L H H L L L L L L Display 8 Blank 0 1 2 3 4 5 6 7 8 9 Blank Blank Blank Blank Blank Blank - 1 1. Depends upon the BCD code previously applied when LE = O a f e d g c b Pin Arrangement B C LT BI LE D A GND 1 2 3 4 5 6 7 8 (Top view) C LT BI LE D A B f g a b c d 16 VCC 15 f 14 g 13 a 12 b 11 c 10 d 9 e e DC Characteristics Ta = 25°C Item Input voltage Symbol VIH Ta = - 40 to +85°C Max - - - 0.5 1.35 1.8 - - - - - 0.1 0.1 0.1 0.33 0.33 ±1.0 40 µA µA I OL = 4 m A I OL = 5.2 m A Vin = VCC or GND Vin = VCC or GND, Iout = 0 µA V I OH = - 4 m A I OH = - 5.2 m A Vin = VIH or VIL I OL = 20 µA V Vin = VIH or VIL I OH = - 20 µA V Unit V Test Conditions VCC (V) Min Typ Max Min 2.0 4.5 6.0 1.5 - 3.15 - 4.2 - - - - - - - - - - 0.5 1.5 3.15 4.2 - VIL 2.0 4.5 6.0 -...