SN54ABT16601

Supply voltage range, V_CC   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  0.5 V to 7 V

Input voltage range, V_I  (except I/O ports) (see Note 1)  . . . . . . . . . . . . . . . . . . . . . . . ... 0.5 V to 7 V
Voltage range applied to any output in the high or power-off state, V _O  . . . . . . . . . . .. 0.5 V to 5.5 V
Current into any output in the low state, I_O : SN54ABT16601. . . . . . . . . . . . . . . . . . . . . . ..........  96 mA

                                                                        SN74ABT16601 . . . . . . . . . . . . . . . . . . . . . . . . .  .128 mA
Input clamp current, I_IK  (V_I  < 0)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 mA
Output clamp current, I _OK (V_O  < 0)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
Package thermal impedance,  _JA (see Note 2): DGG package  . . . . . . . . . . . . . . . . . . . . . . . . . .   81/W
                                                                         DL package  . . . . . . . . . . . . . . . . . . . . . . ..... . .  . 74/W
Storage temperature range, T_stg   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  65 to 150

These SN54ABT16601 18-bit universal bus transceivers combine D-type latches and D-type flip-flops to allow data flow in transparent, latched, clocked, and clock-enabled modes.

Data flow in each direction of SN54ABT16601 is controlled by output-enable (OEAB and OEBA), latch-enable (LEAB and LEBA), and clock (CLKAB and CLKBA) inputs. The clock can be controlled by the clock-enable (CLKENAB and CLKENBA) inputs. For A-to-B data flow, the device operates in the transparent mode when LEAB is high. When LEAB is low, the A data is latched if CLKAB is held at a high or low logic level. If LEAB is low, the A data is stored in the latch/flip-flop on the low-to-high transition of CLKAB. Output enable OEAB is active low. When OEAB is low, the outputs are active. When OEAB is high, the outputs are in the high-impedance state.

Data flow for B to A is similar to that of A to B, but uses OEBA, LEBA, CLKBA, and CLKENBA. To ensure the high-impedance state during power up or power down, OE should be tied to V_CC  through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.The SN54ABT16601 is characterized for operation over the full military temperature range of 55 to 125. The SN74ABT16601 is characterized for operation from 40 to 85.