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Octal Transceiver/Register with 3-STATE Outputs
These devices consist of bus transceiver circuits with 3-STATE, D-type flip-flops, and control circuitry arranged for multiplexed transmission of data directly from the input bus or from the internal registers. Data on the A or B bus will be clocked into the registers as the appropriate clock pin goes to a high logic level. Control G and direction 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 the B register or in both. The select controls can multiplex stored and real-time (transparent mode) data. The direction control determines which bus will receive data when the enable control G is Active LOW. In the isolation mode (control G HIGH), A data may be stored in the B register and/or B data may be stored in the A register.
Features
Typ | Commo-Nr. | C= Bezeichnung | C= Info | Form | Editors Info | |
---|---|---|---|---|---|---|
A | 380230-05 | IC 74ALS646 | ||||
B | 390063-01 | IC TTL OCT BUS TRANSVR 74LS646 | ||||
C | 390281-01 | IC TTL 74F646 | A2620, A3000, PC-60(3) | DIP-24 | ||
D | 390616-01 | IC TTL 74AS646 | A2620 | |||
E | 390951-01 | IC 74F646A | ||||
F | 391163-01 | IC TTL 74LS646 DIP PKG | ||||
G | 391374-01 | IC SM 74FCT646 | A1000+ | SO-24 | ||
H | 391374-02 | IC SM 74FCT646T, LOW SWITCH NOISE | A3400, A-4000 | SO-24 |
Vorkommen | Anzahl | Typ | Position | Bemerkung |
---|---|---|---|---|
A3000 | 9 | C | U253,U254,U255,U256,U703,U704,U705,U706,U707, | - |
A3000-T | 9 | C | U253,U254,U255,U256,U703,U704,U705,U706,U707, | - |
A4000 | 3 | H | U702, U703, U706, | - |