CD54AC257 Datasheet, PDF (1/14 Pages) Intersil Corporation – Quad 2-Input Multiplexer Three-State, Non-Inverting

CD54/74AC257, CD54/74ACT257,
CD74ACT258
Data sheet acquired from Harris Semiconductor
SCHS248A
August 1998 - Revised May 2000
Quad 2-Input Multiplexer
with Three-State Outputs
Features
Description
• ’AC257, ’ACT257. . . . . . . . . . . . . Non-Inverting Outputs
• CD74ACT258 . . . . . . . . . . . . . . . . . . . Inverting Outputs
• Buffered Inputs
• Typical Propagation Delay
- 4.4ns at V_CC = 5V, T_A = 25^oC, C_L = 50pF
• Exceeds 2kV ESD Protection MIL-STD-883, Method
3015
• SCR-Latchup-Resistant CMOS Process and Circuit
Design
• Speed of Bipolar FAST™/AS/S with Significantly
Reduced Power Consumption
The ’AC257, ’ACT257 and CD74ACT258 are quad 2-input
multiplexers with three-state outputs that utilize Advanced
CMOS Logic technology. Each of these devices selects four
bits of data from two sources under the control of a common
Select input (S). The Output Enable (OE) is active LOW.
When OE is HIGH, all of the outputs (Y or Y) are in the high-
impedance state regardless of all other input conditions.
Moving data from two groups of registers to four common
output buses is a common use of the ’AC257, ’ACT257, and
CD74ACT258. The state of the Select input determines the
particular register from which the data comes. The ’AC257,
’ACT257 and CD74ACT258 can also be used as function
generators.
• Balanced Propagation Delays
• AC Types Feature 1.5V to 5.5V Operation and
Balanced Noise Immunity at 30% of the Supply
• ±24mA Output Drive Current
- Fanout to 15 FAST™ ICs
Drives 50Ω Transmission Lines
Pinout
CD54AC257, CD54ACT257
(CERDIP)
CD74AC257, CD74ACT257, CD74ACT258
(PDIP, SOIC)
TOP VIEW
ACT258
S
1I₀
1I₁
1Y
2I₀
2I₁
2Y
GND
AC/ACT257
S1
1I₀ 2
1I₁ 3
1Y 4
2I₀ 5
2I₁ 6
2Y 7
GND 8
AC/ACT257
16 V_CC
15 OE
ACT258
V_CC
OE
14 4I₀
4I₀
13 4I₁
4I₁
12 4Y
4Y
11 3I₀
3I₀
10 3I₁
3I₁
9 3Y
3Y
Ordering Information
PART
NUMBER
TEMP.
RANGE (^oC)
PACKAGE
CD54AC257F3A
CD74AC257E
CD74AC257M
-55 to 125
16 Ld CERDIP
0 to 70^oC, -40 to 85, 16 Ld PDIP
-55 to 125
0 to 70^oC, -40 to 85, 16 Ld SOIC
-55 to 125
CD54ACT257F3A
CD74ACT257E
CD74ACT257M
CD74ACT258E
CD74ACT258M
-55 to 125
16 Ld CERDIP
0 to 70^oC, -40 to 85, 16 Ld PDIP
-55 to 125
0 to 70^oC, -40 to 85, 16 Ld SOIC
-55 to 125
0 to 70^oC, -40 to 85, 16 Ld PDIP
-55 to 125
0 to 70^oC, -40 to 85, 16 Ld SOIC
-55 to 125
NOTES:
1. When ordering, use the entire part number. Add the suffix 96 to
obtain the variant in the tape and reel.
2. Wafer and die for this part number is available which meets all
electrical specifications. Please contact your local TI sales office or
customer service for ordering information.
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
FAST™ is a Trademark of Fairchild Semiconductor.
Copyright © 2000, Texas Instruments Incorporated
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