Electronic Components Datasheet Search |
|
74ALS157D Datasheet(PDF) 2 Page - NXP Semiconductors |
|
74ALS157D Datasheet(HTML) 2 Page - NXP Semiconductors |
2 / 9 page Philips Semiconductors Product specification 74ALS157/74ALS158 Data selector/multiplexer 74ALS157 Quad 2-input data selector/multiplexer, non-inverting 74ALS158 Quad 2-input data selector/multiplexer, inverting 2 1991 Feb 08 853–1129 01670 DESCRIPTION The 74ALS157 is a 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 typical use of the 74ALS157. The state of the select input determines the particular register from which data comes. The device is the logic implementation of 4-pole, 2-position switch where the position of the switch is determined by the logic levels supplied to the select input. The 74ALS158 is similar but has inverting outputs (Yn). TYPE TYPICAL PROPAGATION DELAY TYPICAL SUPPLY CURRENT (TOTAL) 74ALS157 6.0ns 6mA 74ALS158 6.0ns 6mA ORDERING INFORMATION ORDER CODE DESCRIPTION COMMERCIAL RANGE VCC = 5V ±10%, Tamb = 0°C to +70°C DRAWING NUMBER 16-pin plastic DIP 74ALS157N, 74ALS158N SOT38-4 16-pin plastic SO 74ALS157D, 74ALS158D SOT109-1 INPUT AND OUTPUT LOADING AND FAN-OUT TABLE PINS DESCRIPTION 74ALS (U.L.) HIGH/LOW LOAD VALUE HIGH/LOW Ina, Inb, Inc, Ind Data inputs 1.0/1.0 20 µA/0.1mA S Select input 1.0/1.0 20 µA/0.1mA E Enable input 1.0/1.0 20 µA/0.1mA Ya – Yd, Ya – Yd Data outputs 20/240 0.4mA/24mA NOTE: One (1.0) ALS unit load is defined as: 20 µA in the High state and 0.1mA in the Low state. PIN CONFIGURATION – 74ALS157 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 SC00051 PIN CONFIGURATION – 74ALS158 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 SC00052 LOGIC SYMBOL – 74ALS157 VCC = Pin 16 GND = Pin 8 SC00053 1 15 S E 2356 11 10 14 I0a I1a I0b I1b I0c I1c I0d Ya Yb Yc Yd 479 12 13 I1d LOGIC SYMBOL – 74ALS158 VCC = Pin 16 GND = Pin 8 SC00054 1 15 S E 2356 11 10 14 I0a I1a I0b I1b I0c I1c I0d Ya Yb Yc Yd 479 12 13 I1d |
Similar Part No. - 74ALS157D |
|
Similar Description - 74ALS157D |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |