 Power
Logics are logic devices with a power front-end embedded. Providing
a direct control link to system electrical loads, they eliminate
the use of both standard logic ICs and discrete power devices.
The STPIC6C595 is a monolithic, medium-voltage, low-current power
8-bit shift register designed for use in systems that require relatively
moderate load power such as LEDs. The device contains a built-in
voltage clamp on the outputs for inductive transient protection.
The logic functions of the STPIC6C595 consist of the logic functions
existing in the high-speed CMOS (HCMOS) M74HC595 except the outputs
are inverted relative to the HCMOS version. The eight DMOS switches
are controlled from a single input, SER IN (serial input) and by
an 8-bit serial word.
Each of the eight DMOS switches are equipped with an internal 33V
drain-to-gate zener clamp that greatly enhances their capability
to switch unclamped inductive loads.
 The
data is transferred through an 8-bit shift register on the rising
edge of SRCK. The data in the shift register is latched to the outputs
by the rising edges on RCK.
All outputs are placed in a high-impedance mode with a high level
on G, but the data is not cleared from the storage register latches.
CLR clears all data in the shift register only. SER OUT is provided
at the last bit of the shift register to allow cascading in applications
requiring more than eight DMOS switches.
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Low RDS(on) = 4 ohm
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Eight 100mA DMOS outputs
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Low power consumption: Icc = 200mA (max)
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High speed: tPLH = 130ns, tPHL
= 80ns (typ)
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Direct replacement of TI’s TPIC6C595
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Offered in the SO-16 package
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