TPIC6B595
POWER LOGIC 8-BIT SHIFT REGISTER
SLIS032 – JULY 1995
D
D
D
D
D
D
D
Low r
DS(on)
. . . 5
Ω
Typical
Avalanche Energy . . . 30 mJ
Eight Power DMOS-Transistor Outputs of
150-mA Continuous Current
500-mA Typical Current-Limiting Capability
Output Clamp Voltage . . . 50 V
Devices Are Cascadable
Low Power Consumption
DW OR N PACKAGE
(TOP VIEW)
description
The TPIC6B595 is a monolithic, high-voltage,
medium-current power 8-bit shift register
designed for use in systems that require relatively
high load power. The device contains a built-in
voltage clamp on the outputs for inductive
transient protection. Power driver applications
include relays, solenoids, and other medium-
current or high-voltage loads.
This device contains an 8-bit serial-in, parallel-out
shift register that feeds an 8-bit D-type storage
register. Data transfers through both the shift and
storage registers on the rising edge of the
shift-register clock (SRCK) and the register clock
(RCK), respectively. The storage register
transfers data to the output buffer when shift-
register clear (SRCLR) is high. When SRCLR is
low, the input shift register is cleared. When output
enable (G) is held high, all data in the output
buffers is held low and all drain outputs are off.
When G is held low, data from the storage register
is transparent to the output buffers. When data in
the output buffers is low, the DMOS-transistor
outputs are off. When data is high, the DMOS-
transistor outputs have sink-current capability.
The serial output (SER OUT) allows for cascading
of the data from the shift register to additional
devices.
NC
V
CC
SER IN
DRAIN0
DRAIN1
DRAIN2
DRAIN3
SRCLR
G
GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
NC
GND
SER OUT
DRAIN7
DRAIN6
DRAIN5
DRAIN4
SRCK
RCK
GND
NC – No internal connection
logic symbol
†
G
RCK
SRCLR
SRCK
SER IN
9
12
8
13
3
R
EN3
C2
SRG8
C1
1D
2
4
5
6
7
14
15
16
17
2
18
DRAIN0
DRAIN1
DRAIN2
DRAIN3
DRAIN4
DRAIN5
DRAIN6
DRAIN7
SER OUT
† This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
Outputs are low-side, open-drain DMOS transistors with output ratings of 50 V and 150-mA continuous sink-
current capability. Each output provides a 500-mA typical current limit at T
C
= 25°C. The current limit decreases
as the junction temperature increases for additional device protection.
The TPIC6B595 is characterized for operation over the operating case temperature range of – 40°C to 125°C.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
©
1995, Texas Instruments Incorporated
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
1
TI [ TEXAS INSTRUMENTS ]
