SN74HC595ANSR Datasheet, PDF (1/27 Pages) Texas Instruments – 8-BIT SHIFT REGISTERS WITH 3-STATE OUTPUT REGISTERS

SN54HC595
SN74HC595
www.ti.com
SCLS041H – DECEMBER 1982 – REVISED NOVEMBER 2009
8-BIT SHIFT REGISTERS WITH 3-STATE OUTPUT REGISTERS
Check for Samples: SN54HC595 SN74HC595
FEATURES
1
• 8-Bit Serial-In, Parallel-Out Shift
• Wide Operating Voltage Range of 2 V to 6 V
• High-Current 3-State Outputs Can Drive Up To
15 LSTTL Loads
• Low Power Consumption: 80-μA (Max) I_CC
• t_pd = 13 ns (Typ)
• ±6-mA Output Drive at 5 V
• Low Input Current: 1 μA (Max)
• Shift Register Has Direct Clear
DESCRIPTION
The 'HC595 devices contain an 8-bit serial-in,
parallel-out shift register that feeds an 8-bit D-type
storage register. The storage register has parallel
3-state outputs. Separate clocks are provided for both
the shift and storage register. The shift register has a
direct overriding clear (SRCLR) input, serial (SER)
input, and serial outputs for cascading. When the
output-enable (OE) input is high, the outputs are in
the high-impedance state.
Both the shift register clock (SRCLK) and storage
register clock (RCLK) are positive-edge triggered. If
both clocks are connected together, the shift register
always is one clock pulse ahead of the storage
register.
SN54HC595...J OR W PACKAGE
SN74HC595...D, DB, DW, N, NS, OR PW PACKAGE
(TOP VIEW)
Q_{B 1}
Q_C 2
Q_D 3
Q_E 4
Q_F 5
Q_G 6
Q_H 7
GND 8
16 ^V_CC
15 Q_A
14 SER
13 OE
12 RCLK
11 SRCLK
10 SRCLR
9 Q_H′
SN54HC595...FK PACKAGE
(TOP VIEW)
3 2 1 20 1 9
Q_{D 4}
18 ^SER
Q_E 5
17 OE
NC 6
16 NC
Q_F 7
15 RCLK
Q_G 8
14 SRCLK
9 10 11 12 1 3
NC – No internal connection
1
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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