Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

CD74AC257 Datasheet(PDF) 6 Page - Texas Instruments

Click here to check the latest version.
Part No. CD74AC257
Description  Quad 2-Input Multiplexer with Three-State Outputs
Download  8 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
Logo 

CD74AC257 Datasheet(HTML) 6 Page - Texas Instruments

   
Zoom Inzoom in Zoom Outzoom out
 6 / 8 page
background image
6
Propagation Delay,
OE to Y
CD74AC/ACT257
tPLZ, tPHZ,
tPZL, tPZH
5
4.1
-
14.6
4
-
16.1
ns
Propagation Delay,
In to Y
CD74AC/ACT258
tPLH, tPHL
5
2.4
-
8.5
2.3
-
9.3
ns
Propagation Delay,
S to Y
CD74AC/ACT258
tPLH, tPHL
5
4
-
14
3.9
-
15.4
ns
Propagation Delay,
OE to Y
CD74AC/ACT258
tPLZ, tPHZ,
tPZL, tPZH
5
4.1
-
14.6
4
-
16.1
ns
Three-State Output
Capacitance
CO
-
-
-15-
-15
pF
Input Capacitance
CI
-
-
-10-
-10
pF
Power Dissipation Capacitance
CPD
(Note 11)
-
-
130
-
-
130
-
pF
NOTES:
8. Limits tested 100%.
9. 3.3V Min is at 3.6V, Max is at 3V.
10. 5V Min is at 5.5V, Max is at 4.5V.
11. CPD is used to determine the dynamic power consumption per multiplexer.
AC: PD = CPD VCC
2 f
i + ∑ (CL VCC
2 f
o)
ACT: PD =CPD VCC
2 f
i + ∑ (CL VCC
2 f
o)+VCC ∆ICC where fi = input frequency, fo = output frequency, CL = output load capacitance,
VCC = supply voltage.
FIGURE 1. THREE-STATE PROPAGATION DELAY TIMES AND TEST CIRCUIT
Switching Specifications Input tr, tf = 3ns, CL = 50pF (Worst Case) (Continued)
PARAMETER
SYMBOL
VCC (V)
-40oC TO 85oC
-55oC TO 125oC
UNITS
MIN
TYP
MAX
MIN
TYP
MAX
DUT
WITH
THREE-
STATE
OUTPUT
INPUT LEVEL
90%
VS
10%
GND
tf = 3ns
tPZL
tPZH
tPLZ
tPHZ
OUTPUTS
ENABLED
OUTPUTS
DISABLED
OUTPUT: LOW
TO OFF TO LOW
OUTPUT: HIGH
TO OFF TO HIGH
OTHER
INPUTS
(TIED HIGH
OR LOW)
OUTPUT
DISABLE
CL
50pF
500
RL
500
RL
OUT
VS
0.2VCC
VOL (≠GND)
VOH (≠VCC)
0.8 VCC
VS
GND (tPHZ, tPZH)
OUTPUTS
ENABLED
OPEN (tPHL, tPLH)
2 VCC (tPLZ, tPZL)
(OPEN DRAIN)
tr = 3ns
OUTPUT
DISABLE
FOR AC SERIES ONLY: WHEN VCC = 1.5V, RL = 1kΩ
CD74AC257, CD74ACT257, CD74ACT258


Html Pages

1  2  3  4  5  6  7  8 


Datasheet Download




Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn