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 |
PART OF STOCK
| TRANS. FDS9435A | 1500 | FSC | 15+ | SOP-8 |
| DIODO MMBD4148,215 | 300000 | | 15+ | SOT23-3 |
| C.I L7805CD2T-TR | 2500 | ST | 14+ | D2PAK |
| FDS6990A | 1500 | FSC | 15+ | SOP-8 |
| NDS9952A | 1500 | FSC | 15+ | SOP-8 |
| SN65HVD485EDR | 1500 | TI | 16+ | SOP-8 |
| SMBJ8.5CA | 7500 | VISHAY | 16+ | SMB |
| PIC24FJ16GA004-I/PT | 1500 | MICROCHIP | 13+ | TQFP-44 |
| C.I TLC072CDGNR | 5000 | TI | 05+ | MSOP-8 |
| C.I SN74LS374N | 2000 | TI | 15+ | DIP-20 |
| TRANS. BC817-16LT1G | 300000 | ON | 12+ | SOT-23 |
| C.I TL074CN | 1000 | TI | 12+ | DIP-14 |
| OPTOACOPLADOR MOC3063SM | 20000 | FSC | 14+ | SOP-6 |
| TRIAC BT151-500R | 300000 | | 16+ | TO-220 |
| C.I MM74HC164MX | 25000 | FSC | 05+ | SOP-14 |
| C.I WS79L05 | 100000 | WS | 16+ | TO-92 |
| RES RL1206FR-070R75L | 100000 | YAGEO | 16+ | SMD1206 |
| RES RC1206FR-071R5L | 500000 | YAGEO | 16+ | SMD1206 |
| RES RC1206FR-071R2L | 500000 | YAGEO | 16+ | SMD1206 |
| RES RL1206FR-070R68L | 1000000 | YAGEO | 16+ | SMD1206 |
| RES RC0402FR-0722KL | 3000000 | YAGEO | 16+ | SMD0402 |
| RES RC0402FR-0756RL | 2000000 | YAGEO | 16+ | SMD0402 |
| RES RC0402FR-0724RL | 2000000 | YAGEO | 16+ | SMD0402 |
| RES RC1206JR-072ML | 500000 | YAGEO | 16+ | SMD1206 |
| CAP 1206 22PF 1KV NP0 CL31C220JIFNFNE | 600000 | SAMSUNG | 16+ | SMD1206 |
