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| 제조회사 : ANY |
| 판매가격 : 2,920원 |
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| 적립금액 : 0원 |
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| ★★★★★ |
| 신속하고 정확한 배송을 약속드립니다 |
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Transceivers/registers 74F646/A/74F648/A
FEATURES
• Combines 74F245 and two 74F374 type functions in one chip
• High impedance base inputs for reduced loading (70mA in high
and low states)
• Independent registers for A and B buses
• Multiplexed real-time and stored data
• Choice of non-inverting and inverting data paths
• Controlled ramp outputs for 74F646A/74F648A
• 3-state outputs
• 300 mil wide 24-pin slim dip package
DESCRIPTION
The 74F646/74F646A and 74F648/74F648A transceivers/registers
consist of bus transceiver circuits with 3–state outputs, D–type
flip–flops, and control circuitry arranged for multiplexed transmission
of data directly from the input bus or the internal registers. Data on
the A or B bus will be clocked into the registers as the appropriate
clock pin goes high. Output enable (OE) and DIR pins are provided
to control the transceiver function. In the transceiver mode, data
present at the high impedance port may be stored in either the A or
B register or both.
The select (SAB, SBA) pins determine whether data is stored or
transferred through the device in real–time. The DIR determines
which bus will receive data when the OE is active low. In the
isolation mode (OE = high), data from bus A may be stored in the B
register and/or data from bus B may be stored in the A register.
When an output function is disabled, the input function is still
enabled and may be used to store and transmit data. Only one of
the two buses, A or B may be driven at a time.
데이터시트 보기
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