홈 로직 및 전압 변환 버퍼, 드라이버 및 트랜시버 범용 트랜시버
홈
로직 및 전압 변환
버퍼, 드라이버 및 트랜시버
범용 트랜시버

SN74LS640

활성

8진 버스 트랜시버

지금 주문하기
데이터 시트

SN74LS640

활성
지금 주문하기

제품 상세 정보

Number of channels 8 IOL (max) (mA) 24 IOH (max) (mA) -15 Input type TTL Output type TTL Features High speed (tpd 10-50ns) Technology family LS Rating Catalog Operating temperature range (°C) 0 to 70
Number of channels 8 IOL (max) (mA) 24 IOH (max) (mA) -15 Input type TTL Output type TTL Features High speed (tpd 10-50ns) Technology family LS Rating Catalog Operating temperature range (°C) 0 to 70
SOIC (DW) 20 131.84 mm² (12.8 mm × 10.3 mm) PDIP (N) 20 228.702 mm² (24.33 mm × 9.4 mm) SOP (NS) 20 98.28 mm² (12.6 mm × 7.8 mm)
  • SN74LS64X-1 Versions Rated at IOL of 48 mA
  • Bi-directional Bus Transceivers in High-Density 20-Pin Packages
  • Hysteresis at Bus Inputs Improves Noise Margins
  • Choice of True or Inverting Logic
  • Choice of 3-State or Open-collector Outputs
  • SN74LS64X-1 Versions Rated at IOL of 48 mA
  • Bi-directional Bus Transceivers in High-Density 20-Pin Packages
  • Hysteresis at Bus Inputs Improves Noise Margins
  • Choice of True or Inverting Logic
  • Choice of 3-State or Open-collector Outputs

These octal bus transceivers are designed for asynchronous two-way communication between data buses. The devices transmit data from the A bus to the B bus or from the B bus to the A bus depending upon the level at the direction control (DIR) input. The enable input (G) can be used to disable the device so the buses are effectively isolated.

The -1 versions of the SN74LS640 thru SN74LS642, SN74LS644, and SN74LS645 are identical to the standard versions except that the recommended maximum IOL is increased to 48 milliamperes. There are no -1 versions of the SN54LS640 thru SN54LS642, SN54LS644, and SN54LS645.

The SN54LS640 thru SN54LS642, SN54LS644, and SN54LS645 are characterized for operation over the full military tempearture range of –55°C to 125°C. The SN74LS640 thru SN74LS642, SN74LS644, and SN74LS645 are characterized for operation from 0°C to 70°C.

These octal bus transceivers are designed for asynchronous two-way communication between data buses. The devices transmit data from the A bus to the B bus or from the B bus to the A bus depending upon the level at the direction control (DIR) input. The enable input (G) can be used to disable the device so the buses are effectively isolated.

The -1 versions of the SN74LS640 thru SN74LS642, SN74LS644, and SN74LS645 are identical to the standard versions except that the recommended maximum IOL is increased to 48 milliamperes. There are no -1 versions of the SN54LS640 thru SN54LS642, SN54LS644, and SN54LS645.

The SN54LS640 thru SN54LS642, SN54LS644, and SN54LS645 are characterized for operation over the full military tempearture range of –55°C to 125°C. The SN74LS640 thru SN74LS642, SN74LS644, and SN74LS645 are characterized for operation from 0°C to 70°C.
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다운로드

관심 가지실만한 유사 제품

open-in-new 대안 비교
비교 대상 장치와 동일한 기능을 지원하는 핀 대 핀.
SN74HC640 활성 3상 출력을 지원하는 8진 버스 트랜시버 Voltage range 2V to 6V, average propagation delay 20ns, average drive strength 8mA

기술 자료

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* 데이터 시트 SN54LS64x, SN74LS64x Octal Bus Transceivers datasheet (Rev. A) 1979. 4. 1

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