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74F158 Arkusz danych(PDF) 2 Page - NXP Semiconductors |
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74F158 Arkusz danych(HTML) 2 Page - NXP Semiconductors |
2 / 10 page Philips Semiconductors Product specification 74F157A, 74F158A Data selectors/multiplexers 74F157A: Quad 2-input data selector/multiplexer, non-inverting 74F158A: Quad 2-input data selector/multiplexer, inverting 2 1996 Mar 12 853-0346 16555 DESCRIPTION The 74F157A is a high speed Quad 2-Input Multiplexer which selects 4 bits of data from one of two sources under the control of a common Select input (S). The Enable input (E) is active when Low. When E is High, all of the outputs (Yn) are forced Low regardless of all other input conditions. Moving data from two registers to a common output bus is a common use of the 74F157A. The state of the Select input determines the particular register from which the data comes. The device is the logic implementation of a 4-pole, 2-position switch where the position of the switch is determined by the logic levels supplied to the Select input. The 74F158A is similar, but has inverting outputs (Yn). • Industrial temperature range (–10°C to +85°C) available for 74F157A TYPE TYPICAL PROPAGATION DELAY TYPICAL SUPPLY CURRENT (TOTAL) 74F157 4.6ns 15mA 74F157A 4.6ns 15mA 74F158 3.7ns 10mA 74F158A 3.7ns 10mA ORDERING INFORMATION ORDER CODE DESCRIPTION COMMERCIAL RANGE VCC = 5V ±10%, Tamb = 0°C to +70°C INDUSTRIAL RANGE VCC = 5V ±10%, Tamb = –40°C to +85°C PKG. DWG. # 16-pin plastic DIP N74F157AN, N174F158AN I74F157AN SOT38-4 16-pin plastic SO N74F157AD, N74F158AD I74F157AD SOT109-1 INPUT AND OUTPUT LOADING AND FAN OUT TABLE PINS DESCRIPTION 74F (U.L.) HIGH/LOW LOAD VALUE HIGH/LOW Ina, Inb, Inc, Ind Data inputs 1.0/1.0 20 µA/0.6mA S Select input 1.0/1.0 20 µA/0.6mA E Enable input 1.0/1.0 20 µA/0.6mA Ya–Yd Data outputs (74F157/74F157A) 50/33 1.0mA/20mA Ya–Yd Data outputs (74F158/74F158A) 50/33 1.0mA/20mA NOTE: One (1.0) FAST unit load is defined as: 20 µA in the High state and 0.6mA in the Low state. PIN CONFIGURATIONS, 74F157A 74F158A 16 15 14 13 12 11 10 7 6 5 4 3 2 1 Yb VCC Yd I0c I1c I1d E I0d S I0a I1b I1a Ya I0b 9 8 GND Yc SF00215 16 15 14 13 12 11 10 7 6 5 4 3 2 1 Yb VCC Yd I0c I1c I1d E I0d S I0a I1b I1a Ya I0b 9 8 GND Yc SF00216 LOGIC SYMBOLS, 74F157A 74F158A VCC = Pin 16 GND = Pin 8 SF00217 1 15 S E 2356 11 10 14 I0a I1a I0b I1b I0c I1c I0d Ya Yb Yc Yd 479 12 13 I1d VCC = Pin 16 GND = Pin 8 SF00218 1 15 S E 2356 11 10 14 I0a I1a I0b I1b I0c I1c I0d Ya Yb Yc Yd 479 12 13 I1d |
Podobny numer części - 74F158 |
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Podobny opis - 74F158 |
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