8-Bit Shift Registers
Description
SN54HC595, SN74HC595
SCLS041J – DECEMBER 1982 – REVISED OCTOBER 2021
SNx4HC595 8-Bit Shift Registers With 3-State Output Registers
1 Features
• 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 (maximum) ICC • tpd = 13 ns (typical) • ±6-mA output drive at 5 V • Low input current: 1 μA (maximum) • Shift register has direct clear • On products compliant to MIL-PRF-38535,
all parameters are tested unless otherwise noted.
On all other products, production processing does not necessarily include testing of all parameters.
2 Applications
• Network switches • Power infrastructure • LED displays • Servers
3 Description
The SNx4HC595 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 3state 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.
Device Information
PART NUMBER
PACKAGE(1)
BODY SIZE (NOM)
SN54HC595FK
LCCC (20)
8.
89 mm × 8.
89 mm
SN54HC595J
CDIP (16)
21.
34 mm × 6.
92 mm
SN74HC595N
PDIP (16)
19.
31 mm × 6.
35 mm
SN74HC595D
SOIC (16)
9.
90 mm × 3.
90 mm
SN74HC595DW SOIC (16)
10.
30 mm × 7.
50 mm
SN74HC595DB
SSOP (16)
6.
20 mm × 5.
30 mm
SN74HC595PW TSSOP (16)
5.
00 mm × 4.
40 mm
13 OE
12 RCLK
10 SRCLR
11 SRCLK
14 SER
(1) For all available packages, see the orderable addendum at the end of the data sheet.
1D C1
R
3R C3
3S
15 QA
2S 2R
C2 R
3R C3
3S
1 QB
2S 2R
C2 R
3R C3
3S
2 QC
2S 2R
C2 R
3R C3
3S
3 QD
2S 2R
C2 R
3R C3
3S
4 QE
2S 2R
C2 R
3R C3
3S
5 QF
2S 2R
C2 R
3R C3
3S
6 QG
2S 2R
C2 R
3R C3
3S
Pin numbers shown are for the D, DB, DW, J, N, NS, PW, and W packages.
Functional Block Diagram...
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