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SN74AHCT595DRE4 Datasheet(PDF) 5 Page - Texas Instruments

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Part # SN74AHCT595DRE4
Description  SNx4AHCT595 8-Bit Shift Registers With 3-State Output Registers
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

SN74AHCT595DRE4 Datasheet(HTML) 5 Page - Texas Instruments

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SN54AHCT595, SN74AHCT595
www.ti.com
SCLS374N – MAY 1997 – REVISED JULY 2014
7.4 Thermal Information
SN74AHCT595
THERMAL METRIC(1)
D
DB
N
NS
PW
UNIT
16 PINS
RθJA
Junction-to-ambient thermal resistance
80.2
97.5
47.5
79.1
105.7
RθJC(top)
Junction-to-case (top) thermal resistance
39.1
47.7
34.9
35.4
40.4
RθJB
Junction-to-board thermal resistance
27.7
48.1
27.5
39.9
50.7
°C/W
ψJT
Junction-to-top characterization parameter
9.9
9.8
19.8
5.4
3.7
ψJB
Junction-to-board characterization parameter
37.4
47.6
27.4
39.5
50.1
RθJC(bot)
Junction-to-case (bottom) thermal resistance
n/a
n/a
n/a
n/a
n/a
(1)
For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
7.5 Electrical Characteristics
over operating free-air temperature range (unless otherwise noted)
TA = 25°C
SN54AHCT595(1)
SN74AHCT595
PARAMETER
TEST CONDITIONS
VCC
UNIT
MIN
TYP
MAX
MIN
MAX
MIN
MAX
IOH = –50 mA
4.4
4.5
4.4
4.4
VOH
4.5 V
V
IOH = –8 mA
3.94
3.8
3.8
IOL = 50 µA
0.1
0.1
0.1
VOL
4.5 V
V
IOL = 8 mA
0.36
0.44
0.44
0 to 5.5
II
VI = 5.5 V or GND
±0.1
±1(2)
±1
µA
V
IOZ
VO = VCC or GND
QA – QH
5.5 V
±0.25
±2.5
±2.5
µA
ICC
VI = VCC or GND
IO = 0
5.5 V
4
40
40
µA
One input at 3.4V,
ΔICC
(3)
5.5 V
2
2.2
2.2
mA
Other inputs at VCC or GND
Ci
VI = VCC or GND
5 V
3
10
10
pF
Co
VO = VCC or GND
5 V
5.5
pF
(1)
Product Preview
(2)
On products compliant to MIL-PRF-38535, this parameter is not production tested at VCC = 0 V.
(3)
This is the increase in supply current for each input at one of the specified TTL voltage levels, rather than 0 V or VCC.
7.6 Timing Requirements
over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 3)
TA = 25°C
SN54AHCT595(1)
SN74AHCT595
PARAMETER
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
SRCLK high or low
5
5.5
5.5
tw
Pulse duration
RCLK high or low
5
5.5
5.5
ns
SRCLR low
5
5
5
SER before SRCLK
3
3
3
SRCLK
↑ before RCLK↑(2)
5
5
5
tsu
Setup time
ns
SRCLR low before RCLK
5
5
5
SRCLR high (inactive) before SRCLK
3.4
3.8
3.8
th
Hold time
SER after SRCLK
2
2
2
ns
(1)
Product Preview
(2)
This setup time allows the storage register to receive stable data from the shift register. The clocks can be tied together, in which case
the shift register is one clock pulse ahead of the storage register.
Copyright © 1997–2014, Texas Instruments Incorporated
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