8-Bit Shift Register with
Output Register
MC74VHC594
The MC74VHC594 is an 8−bit shift register designed for 2.0 V to
5.5 V VCC operation. The device contain an 8−bit serial−in,
parallel−out shift register that feeds an 8−bit D−type storage register.
Separate clocks (RCLK, SRCLK) and direct overriding clear (RCLR,
SRCLR) inputs are provided on the shift and storage registers. A serial
output (QH’) is provided for cascading purposes.
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MARKING DIAGRAM
The shift−register (SRCLK) and storage−register (RCLK) clocks
are positive−edge triggered. If the clocks are tied together, the shift
register always is one clock pulse ahead of the storage register.
16
9
VHC
594
TSSOP−16
DT SUFFIX
CASE 948F
ALYWG
Features
G
8
1
• 2.0 V to 5.5 V V Operation
CC
• High Speed: f
= 185 MHz (Typ) at V = 5 V
CC
max
A
WL
Y
= Assembly Location
= Wafer Lot
• Low Power Dissipation: I = 4 mA (Max) at T = 25°C
CC
A
• High Noise Immunity: V
= V = 28% V
NIL CC
NIH
= Year
• Power Down Protection Provided on Inputs
• Balanced Propagation Delays
W, WW = Work Week
G or G = Pb−Free Package
(Note: Microdot may be in either location)
• Low Noise: V
= 1.0 V (Max)
OLP
• NLV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements;
AEC−Q100 Qualified and PPAP Capable
PIN ASSIGNMENT
Q
Q
1
2
3
4
5
6
7
8
16
15
V
CC
B
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Q
Compliant
C
D
A
Q
14 SER
Q
13 RCLR
12 RCLK
11 SRCLK
E
Q
Q
F
G
Q
10
SRCLR
H
GND
9
Q '
H
ORDERING INFORMATION
†
Device
MC74VHC594DTR2G TSSOP−16 2500 Tape &
(Pb−Free) Reel
NLV74VHC594DTR2G* TSSOP−16 2500 Tape &
(Pb−Free) Reel
Package
Shipping
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
*NLV Prefix for Automotive and Other Applications
Requiring Unique Site and Control Change
Requirements; AEC−Q100 Qualified and PPAP
Capable
© Semiconductor Components Industries, LLC, 2021
1
Publication Order Number:
August, 2021 − Rev. 1
MC74VHC594/D