HD74LV157A

HD74LV157A Quad. 2-to-1 line Data Selectors / Multiplexers (Noninverted Outputs) ADE-205-263 (Z) 1st Edition March 1999 Description The HD74LV157A has four 2-input digital multiplexers with common select and strobe inputs. When the strobe input is low, a 4-bit word is selected from one of two sources and is routed to the four outputs. The device provides true data. Low-voltage and high-speed operation is suitable for the battery-powered products (e.g., notebook computers), and the low-power consumption extends the battery life. Features VCC = 2.0 V to 5.5 V operation All inputs VIH (Max.) = 5.5 V (@VCC = 0 V to 5.5 V) All outputs VO (Max.) = 5.5 V (@VCC = 0 V) Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C) Typical VOH undershoot > 2.3 V (@VCC = 3.3 V, Ta = 25°C) Output current ±6 mA (@VCC = 3.0 V to 3.6 V), ±12 mA (@VCC = 4.5 V to 5.5 V) Function Table Inputs STB H L L L L Note: H: High level L: Low level X: Immaterial SEL X L L H H A X L H X X B X X X L H Output L L H L H HD74LV157A Pin Arrangement SEL 1 1A 2 1B 3 1Y 4 2A 5 2B 6 2Y 7 GND 8 A S G B Y A B A B Y A 16 VCC 15 STB 14 4A 13 4B 12 4Y 11 3A 10 3B 9 3Y Y Y B (Top view) 2 HD74LV157A Absolute Maximum Ratings Item Supply voltage range Input voltage range* 1 1, 2 Symbol VCC VI VO Ratings –0.5 to 7.0 –0.5 to 7.0 –0.5 to VCC + 0.5 –0.5 to 7.0 Unit V V V Conditions Output voltage range* Output: H or L VCC: OFF Input clamp current Output clamp current Continuous output current Continu...