DM74ALS137M
DM74ALS137M Datasheet
DM74ALS137 3 to 8 Line Decoder/Demultiplexer with Address Latches
| Part | Datasheet |
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DM74ALS137M |
DM74ALS137M (pdf) |
| Related Parts | Information |
|---|---|
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DM74ALS137MX |
DM74ALS137MX |
DM74ALS137N |
DM74ALS137N |
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| DM74ALS137 3 to 8 Line Decoder/Demultiplexer with Address Latches DM74ALS137 3 to 8 Line Decoder/Demultiplexer with Address Latches The ALS137 is a three line to eight line decoder/demultiplexer with latches on the three address inputs. When the latch-enable input GL is LOW, the ALS137 acts as a decoder/demultiplexer. When GL goes from LOW-to-HIGH, the address present at the select inputs A, B, and C is stored in the latches. Further address changes are ignored as long as GL remains HIGH. The output enable controls, G1 and G2, control the state of the outputs independently of the select or latch-enable inputs. All of the outputs are HIGH unless G1 is HIGH and G2 is LOW. The ALS137 is ideally suited for implementing glitch-free decoders in strobed stored-address applications in bus-oriented systems. s Combines decoder and 3-bit address latch s Incorporates 3 enable inputs to simplify cascading s Low power dissipation 28 mW typ s Switching specifications guaranteed over full tempera- ture and VCC range s Advanced oxide-isolated, ion-implanted Schottky TTL process Ordering Code: Order Number Package Number Package Description DM74ALS137M M16A 16-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-012, Narrow DM74ALS137N N16E 16-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram Function Table Inputs Enable Select Outputs GL G1 G2 C B A Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 X H X L X L H L H L H L H L HH L H L H HHHHLHHHH L H L H L HHHHLHHH L H L H L LHH L H L H L H L H L X Output corresponding to stored address, L all others, H L = LOW State H = HIGH State X = Don't Care 2000 Fairchild Semiconductor Corporation DS006202 DM74ALS137 Logic Diagram DM74ALS137 Absolute Maximum Ratings Note 1 Supply Voltage Input Voltage Operating Free Air Temperature Range Storage Temperature Range Typical N Package M Package 7V 0°C to +70°C −65°C to +150°C 75.5°C/W 104.0°C/W Note 1 The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table will define the conditions for actual device operation. Recommended Operating Conditions Parameter Supply Voltage HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Current LOW Level Output Current Width of Enabling Pulse GL LOW Setup Time Note 2 A, B, C Hold Time Note 2 A, B, C Free Air Operating Temperature Note 2 The arrow indicates the positive edge of the GL input pulse is used for reference. Nom 5 Max 8 Electrical Characteristics over recommended operating free air temperature range. All typical values are measured at VCC = 5V, TA = 25°C. Parameter Conditions |
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