74F269 Datasheet | Philips Semiconductors

FEATURES - Synchronous counting and loading - Built-in look-ahead carry capability - Count frequency 115MHz typ - Supply current 95m A typ DESCRIPTION The 74F269 is a fully synchronous 8-stage Up/Down Counter featuring a preset capability for programmable operation, carry look-ahead 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. TYPICAL SUPPLY CURRENT (TOTAL) 95m A PIN CONFIGURATION U/D 1 Q0 Q1 Q2 Q3 Q4 GND Q5 Q6 2 3 4 5 6 7 8 9 24 PE 23 P0 22 P1 21 P2 20 P3 19 VCC 18 P4 17 P5 16 P6 15 P7 14 TC 13 CET Q7 10 CP 11 CEP 12 TYPE 74F269 TYPICAL f MAX 115MHz SF00834 ORDERING INFORMATION DESCRIPTION 24-Pin Plastic Slim DIP (300mil) 24-Pin Plastic SOL 24-Pin Plastic SSOP type II MERCIAL RANGE VCC = 5V ±10%, Tamb = 0°C to +70°C N74F269N N74F269D N74F269DB PKG DWG # SOT222-1 SOT137-1 SOT340-1 INPUT AND OUTPUT LOADING AND FAN-OUT TABLE PINS P0 - P7 PE U/D CEP CET CP TC Q0 - Q7 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 DESCRIPTION 74F(U.L.) HIGH/LOW 1.0/1.0 1.0/1.0 1.0/1.0 1.0/1.0 1.0/1.0 1.0/1.0 50/33 50/33 LOAD VALUE HIGH/LOW 20µA/0.6m A 20µA/0.6m A 20µA/0.6m A 20µA/0.6m A 20µA/0.6m A 20µA/0.6m A 1.0m A/20m A 1.0m A/20m A NOTE: One (1.0) FAST Unit Load is defined as: 20µA in the High state and 0.6m A in the Low state. 1996 Jan 05 853- 0056 16186 Philips Semiconductors Product specification 8- bit bidirectional binary counter LOGIC SYMBOL LOGIC SYMBOL (IEEE/IEC) CTR DIV 256 24 1 12 13 & EN6 2, 3, 5, 6 +/C7 2, 4, 5, 6- 2 3 4 5 6 8 9 10 14 G5 M1[LOAD] M2[COUNT] M3[UP] M4[DOWN] P0 24 1 12 13 11 PE U/D CEP CET CP...