SN74LS240DWR Integrated Circuit Components Program Memory LCD Controller ICs
electronics ic chip
,integrated circuit ic
SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS
3-State Outputs Drive Bus Lines or Buffer Memory Address Registers PNP Inputs Reduce DC Loading Hysteresis at Inputs Improves Noise Margins
Feature
Convert TTL Voltage Levels to MOS Levels
High Sink-Current Capability Input Clamping Diodes Simplify System Design
Open-Collector Driver for Indicator Lamps and Relays
description/ordering information
These octal buffers and line drivers are designed specifically to improve both the performance and density of three-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The designer has a choice of selected combinations of inverting and noninverting outputs, symmetrical, active-low output-control (G) inputs, and complementary output-control (G and G) inputs. These devices feature high fan-out, improved fan-in, and 400-mV noise margin. The SN74LS’ and SN74S’ devices can be used to drive terminated lines down to 133 Ω.
| ABSOLUTE MAXIMUM RATINGS(1) |
|
Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . 7 V Input voltage, VI: ’LS. . . . . . . . . . . . . . . . . . . . . . . . 7 V L’S . . . . . . . . . . . .. . . 5.5 V Off-state output voltage . . . . . . . . . . . . . 5.5 V Package thermal impedance, θJA (see Note 2): DB package . . . . . . . . . . . . . 70 C/W DW package . . . . . . . . . . . . . . . . . . . 58 °C/W N package . . . . . . . . . . . . . . . . . . . . . . 69 °C/W NS package . . . . . . . . . . . . . . . . . . . . . . . . .60 °C/W Storage temperature range, Tstg . . . . . . –65°C to 150°C |
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