SN54HCT646FK

The SN54HCT646FK is designed as octal bus transceiver which consists 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 from the internal registers. Data on the A or B bus is clocked into the registers SN54HCT646FK on the low-to-high transition of the appropriate clock (CLKAB or CLKBA) input.

SN54HCT646FK has six features. (1) Inputs are TTL-voltage compatible. (2) Independent registers and enables for A and B buses. (3) Multiplexed real-time and stored data. (4) True data paths. (5) High-current 3-state outputs can drive up to 15 LSTTL loads. (6) Package options include plastic small-outline (DW) and ceramic flat (W) packages, ceramic chip carriers (FK), and standard plastic (NT) and ceramic (JT) 300-mil DIPs. That are all the main features.

Some absolute maximum ratings of SN54HCT646FK have been concluded into several points as follow. (1) Its supply voltage range would be from -0.5V to 7V. (2) Its input clamp current would be ±20mA. (3) Its output clamp current would be ±20mA. (4) Its continuous output current would be ±35mA. (5) Its continuous current through VCC or GND would be ±70mA. (6) Its package thermal impedance would be 81°C/W for DW pachage and would be 67°C/W for NT package. (7) Its storage temperature range would be from -65°C to 150°C. It should be noted that stresses above those listed in absolute maximum ratings may cause permanent damage to device.

Also some electrical characteristics about SN54HCT646FK. (1) Its output voltage high would be min 4.4V and typ 4.499V at Vcc=4.5V and Ioh=-20uA and it would be min 3.98V and typ 4.3V at Vcc=4.5V and Ioh=-6mA. (2) Its output voltage low would be typ 0.001V and max 0.1V at Vcc=4.5V and Iol=20uA and typ 0.17V and max 0.26V at Vcc=4.5V and Iol=6mA. And so on. If you have any question or suggestion or want to know more information about SN54HCT646FK please contact us for details. Thank you!