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MC74LVQ138DT bảng dữ liệu(PDF) 1 Page - Motorola, Inc |
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MC74LVQ138DT bảng dữ liệu(HTML) 1 Page - Motorola, Inc |
1 / 8 page MOTOROLA SEMICONDUCTOR TECHNICAL DATA 1 REV 1 © Motorola, Inc. 1996 1/96 Low-Voltage Quiet CMOS 1-of-8 Decoder/Demultiplexer The MC74LVQ138 is a high performance, 1–of–8 decoder/ demultiplexer operating from a 2.7 to 3.6V supply. High impedance TTL compatible inputs significantly reduce current loading to input drivers while TTL compatible outputs offer improved switching noise performance. The MC74LVQ138 is suitable for memory address decoding and other TTL level bus oriented applications. The MC74LVQ138 high–speed 1–of–8 decoder/demultiplexer accepts three binary weighted inputs (A0, A1, A2) and, when enabled, provides eight mutually exclusive active–LOW outputs (O0–O7). The LVQ138 features three Enable inputs, two active–LOW (E1, E2) and one active–HIGH (E3). All outputs will be HIGH unless E1 and E2 are LOW, and E3 is HIGH. This multiple enabled function allows easy parallel expansion of the device to a 1–of–32 (5 lines to 32 lines) decoder with just four LVQ138 devices and one inverter (See Figure 1). The LVQ138 can be used as an 8–output demultiplexer by using one of the active–LOW Enable inputs as the data input and the other Enable inputs as strobes. The Enable inputs which are not used must be permanently tied to their appropriate active–HIGH or active–LOW state. Current drive capability is 12mA at the outputs. • Designed for 2.7 to 3.6V VCC Operation – Ideal for Low Power/Low Noise Applications • Guaranteed Simultaneous Switching Noise Level and Dynamic Threshold Performance • Guaranteed Skew Specifications • Guaranteed Incident Wave Switching into 75Ω • Low Static Supply Current (10µA) Substantially Reduces System Power Requirements • Latchup Performance Exceeds 500mA • ESD Performance: Human Body Model >2000V 15 16 14 13 12 11 10 2 1 3 4 5 6 7 VCC 9 8 O0 O1 O2 O3 O4 O5 O6 A0 A1 A2 E1 E2 E3 O7 GND Pinout: 16–Lead Plastic Package (Top View) M SUFFIX PLASTIC SOIC EIAJ CASE 966–01 16 1 MC74LVQ138 LOW–VOLTAGE CMOS DECODER/DEMULTIPLEXER D SUFFIX PLASTIC SOIC CASE 751B–05 DT SUFFIX PLASTIC TSSOP CASE 948F–01 16 1 16 1 PIN NAMES Function Address Inputs Enable Inputs Enable Input Outputs Pins A0–A2 E1–E2 E3 O0–O7 SD SUFFIX PLASTIC SSOP CASE 940B–03 16 1 LVQ |
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