74F269SCX

74F269SCX Datasheet


74F269 8-Bit Bidirectional Binary Counter

Part Datasheet
74F269SCX 74F269SCX 74F269SCX (pdf)
Related Parts Information
74F269SC 74F269SC 74F269SC
74F269SPC 74F269SPC 74F269SPC
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74F269 8-Bit Bidirectional Binary Counter
74F269 8-Bit Bidirectional Binary Counter

April 2007
• Synchronous counting and loading
• Built-in lookahead carry capability
• Count frequency 100MHz
• Supply current 113mA typ.
• 300mil slimline package

The 74F269 is a fully synchronous 8-stage up/down counter featuring a preset capability for programmable operation, carry lookahead for easy cascading and a U/D input to control the direction of counting. All state changes, whether in counting or parallel loading, are initiated by the rising edge of the clock.
Ordering Information

Order Number

Package Number

Package Description
74F269SC

M24B
24-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-013, Wide
74F269SPC

N24C
24-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering number.

Logic Symbols

Connection Diagram

IEEE/IEC

Function Table

PE CEP CET U/D CP

Function

LXXX

Parallel Load All Flip-Flops

HHXX

Hold

HXHX

Hold TC Held High

HL LH

Count Up

Count Down

H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial
= Transition LOW-to-HIGH
74F269 8-Bit Bidirectional Binary Counter

Unit Loading/Fan Out

Pin Names PE U/D CEP CET CP TC

Description Parallel Data Inputs Parallel Enable Input Active LOW Up-Down Count Control Input Count Enable Parallel Input Active LOW Count Enable Trickle Input Active LOW Clock Input Terminal Count Output Active LOW Flip-Flop Outputs

U.L. HIGH / LOW
/ / / / / / 50 / 50 /

Input IIH / IIL Output IOH / IOL
20µA / mA 20µA / -0.6mA 20µA / -0.6mA 20µA / -0.6mA 20µA / -0.6mA 20µA / mA -1mA / 20mA -1mA / 20mA
1988 Fairchild Semiconductor Corporation
74F269 8-Bit Bidirectional Binary Counter

Logic Diagram

Figure
74F269 8-Bit Bidirectional Binary Counter

Absolute Maximum Ratings

Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only.

TSTG TA TJ VCC VIN IIN VO

Parameter Storage Temperature Ambient Temperature Under Bias Junction Temperature Under Bias VCC Pin Potential to Ground Pin Input Voltage 1 Input Current 1 Voltage Applied to Output in HIGH State with VCC = 0V

Standard Output 3-STATE Output Current Applied to Output in LOW State Max.

Note Either voltage limit or current limit is sufficient to protect inputs.

Rating to +150°C to +125°C to +150°C
to +7.0V to +7.0V to +5.0mA
to VCC to +5.5V twice the rated IOL mA

Recommended Operating Conditions
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Datasheet ID: 74F269SCX 513309