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SN74AHC595N Datasheet(PDF) 7 Page - Texas Instruments

Part No. SN74AHC595N
Description  8-BIT SHIFT REGISTERS WITH 3-STATE OUTPUT REGISTERS
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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SN54AHC595, SN74AHC595
8BIT SHIFT REGISTERS
WITH 3STATE OUTPUT REGISTERS
SCLS373I − MAY 1997 − REVISED JUNE 2004
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
timing requirements over recommended operating free-air temperature range,
VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
TA = 25°C
SN54AHC595
SN74AHC595
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
UNIT
SRCLK high or low
5
5
5
tw
Pulse duration
RCLK high or low
5
5
5
ns
tw
Pulse duration
SRCLR low
5
5
5
ns
SER before SRCLK
3
3
3
tsu
Setup time
SRCLK
↑ before RCLK↑†
5
5
5
ns
tsu
Setup time
SRCLR low before RCLK
5
5
5
ns
SRCLR high (inactive) before SRCLK
2.5
2.5
2.5
th
Hold time
SER after SRCLK
2
2
2
ns
† 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.
switching characteristics over recommended operating free-air temperature range,
VCC = 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
LOAD
TA = 25°C
SN54AHC595
SN74AHC595
UNIT
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
LOAD
CAPACITANCE
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
fmax
CL = 15 pF
80*
120*
70*
70
MHz
fmax
CL = 50 pF
55
105
50
50
MHz
tPLH
RCLK
QA−QH
CL = 15 pF
6*
11.9*
1*
13.5*
1
13.5
ns
tPHL
RCLK
QA−QH
CL = 15 pF
6*
11.9*
1*
13.5*
1
13.5
ns
tPLH
SRCLK
QH
CL = 15 pF
6.6*
13*
1*
15*
1
15
ns
tPHL
SRCLK
QH′
CL = 15 pF
6.6*
13*
1*
15*
1
15
ns
tPHL
SRCLR
QH′
CL = 15 pF
6.2*
12.8*
1*
13.7*
1
13.7
ns
tPZH
OE
QA−QH
CL = 15 pF
6*
11.5*
1*
13.5*
1
13.5
ns
tPZL
OE
QA−QH
CL = 15 pF
7.8*
11.5*
1*
13.5*
1
13.5
ns
tPLH
RCLK
QA−QH
CL = 50 pF
7.9
15.4
1
17
1
17
ns
tPHL
RCLK
QA−QH
CL = 50 pF
7.9
15.4
1
17
1
17
ns
tPLH
SRCLK
QH
CL = 50 pF
9.2
16.5
1
18.5
1
18.5
ns
tPHL
SRCLK
QH′
CL = 50 pF
9.2
16.5
1
18.5
1
18.5
ns
tPHL
SRCLR
QH′
CL = 50 pF
9
16.3
1
17.2
1
17.2
ns
tPZH
OE
QA−QH
CL = 50 pF
7.8
15
1
17
1
17
ns
tPZL
OE
QA−QH
CL = 50 pF
9.6
15
1
17
1
17
ns
tPHZ
OE
QA−QH
CL = 50 pF
8.1
15.7
1
16.2
1
16.2
ns
tPLZ
OE
QA−QH
CL = 50 pF
9.3
15.7
1
16.2
1
16.2
ns
* On products compliant to MIL-PRF-38535, this parameter is not production tested.
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.




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